Sample records for drive irrigation systems

  1. Economics of Irrigation Systems

    E-Print Network [OSTI]

    Amosson, Stephen H.; New, Leon; Almas, Lal; Bretz, Fran; Marek, Thomas

    2002-01-11T23:59:59.000Z

    Choosing and buying an irrigation system for crop production can be expensive and complex. This publication discusses six common types of irrigation systems used in Texas: conventional furrow; surge flow furrow; mid-elevation spray application...

  2. Irrigation of Liquid Manures With Center-Pivot Irrigation Systems

    E-Print Network [OSTI]

    Kaye, Jason P.

    Irrigation of Liquid Manures With Center-Pivot Irrigation Systems Albert R. Jarrett, Professor Cooperative Extension Center Pivot A center pivot irrigation system is a single lateral, fixed at one end (the are correctly sized Figure 1. Center Pivot Irrigation System. #12;ï They do not irrigate corners of fieldsóthey

  3. Economics of Irrigation Systems 

    E-Print Network [OSTI]

    Amosson, Stephen H.; New, Leon; Almas, Lal; Bretz, Fran; Marek, Thomas

    2002-01-11T23:59:59.000Z

    -inch for the intermediate water-use scenario (sorghum/soybeans) at 350- foot pumping lift for the six irrigation systems. dollars/acre-inch of water Cost Component/System CF SF MESA LESA LEPA SDI A. Fixed cost Depreciation 0.32 0.45 0.76 1.06 1.22 2.09 Taxes 0.02 0.02 0... of $832.23 per acre (Table 2). The economic feasibility of a new irrigation system can be affected by the marginal tax rate. For example, if a producer?s marginal tax rate is 28 percent instead of 15 percent, the net investment in subsurface drip...

  4. Irrigation Systems for Forage Crops.

    E-Print Network [OSTI]

    Henggeler, Joseph C.

    1988-01-01T23:59:59.000Z

    TDDe Z TA24S.7 8873 NO.1611 1?1611 ' Texas Agricultural Extension Service l'BRARY FEB 0 1 1989 texas A&M University Irrigation Systems for Forage Crops Texas Agricultural Extension Service ? Zerle L. Carpenter, Director ? The Texas A...&M University System ? College Station, Texas (Blank Pa,ge -In. O-riIIJIal BuIIetinl . 1?? .. , * ): . Irrigation Systems for Forage Crops Joseph C. Henggeler* Several types of irrigation systems can be chosen for irrigating forage crops for grazing...

  5. Maintaining Subsurface Drip Irrigation Systems

    E-Print Network [OSTI]

    Enciso, Juan; Porter, Dana; Bordovsky, Jim; Fipps, Guy

    2004-09-07T23:59:59.000Z

    A subsurface drip irrigation system should last more than 20 years if properly maintained. Important maintenance procedures include cleaning the filters, flushing the lines, adding chlorine and injecting acids. Details of these procedures...

  6. Irrigation Retrofit Program Improving sprinkler system efficiency

    E-Print Network [OSTI]

    Jawitz, James W.

    Irrigation Retrofit Program Improving sprinkler system efficiency Approximately 70% of the homes of irrigation system retrofits that qualify for rebates Contact the Extension Service. MiamiDade County in MiamiDade County have h i l i i i i d i d i l ( h l f )mechanical irrigation timers and indexing valves

  7. Irrigation of Liquid Manures with Solid Set Systems

    E-Print Network [OSTI]

    Kaye, Jason P.

    Irrigation of Liquid Manures with Solid Set Systems Albert R. Jarrett, Professor, Agricultural Extension Solid Set Irrigation System Solid set irrigation is a system of irrigation sprinklers and piping moved from one location to another). Solid set irrigation systems are rarely used to apply liquid manure

  8. Irrigation Retrofit Program Steps to Improving sprinkler system efficiency

    E-Print Network [OSTI]

    Jawitz, James W.

    Irrigation Retrofit Program Steps to Improving sprinkler system efficiency Step 1. Replace Program provides rebates for improving urban landscape irrigation systems. Homeowners Associations can receive up to $400 for upgrading their irrigation system. In order to receive reimbursement , sign up

  9. Automation of Pivot Sprinkler Irrigation Systems to More Efficiently Utilize Rainfall and Irrigation Water

    E-Print Network [OSTI]

    Wendt, C. W.; Runkles, J. R.; Gerst, M. D.; Harbert, H. P. III; Hutmacher, R. B.

    A study was conducted to develop automated pivot sprinkler irrigation systems and determine if such systems use less water and energy than manually operated systems. The study was conducted near Earth, Texas, using irrigation systems located...

  10. No-till Cropping Systems for Stretching Limited Irrigation Supplies

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    No-till Cropping Systems for Stretching Limited Irrigation Supplies Gary W. Hergert, Professor, limited irrigation), (2) irrigation water management (improved scheduling, automated systems, converting management is required to reduce the causes of that conflict. Lower groundwater levels in irrigated areas

  11. UNCORRECTED 2 Coordination in irrigation systems: An analysis

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    UNCORRECTED PROOF 1 2 Coordination in irrigation systems: An analysis 3 of the Lansing­Kremer model;UNCORRECTED PROOF 25 argued that a central control was inevitable for larger irrigation systems and hypoth- 26, there are various examples of complex irrigation systems and drainage systems 28 that have evolved without central

  12. Next Generation Environmentally Friendly Driving Feedback Systems...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Environmentally Friendly Driving Feedback Systems Research and Development Next Generation Environmentally Friendly Driving Feedback Systems Research and Development 2012 DOE...

  13. Design criteria for surface irrigation systems

    E-Print Network [OSTI]

    Wilke, Otto Charles

    1965-01-01T23:59:59.000Z

    ) n=o In this study the English system of units will be used. Therefore, for border irrigation, c is the average depth of surface storage in feet, q is the inflow in cubic feet per minute per foot of border width, and y is the accumulateci... infiltration in feet. For furrow irrigation, c is the average area of surface stcrage in square feet, q s the inflow into the furrow in cut?c feet per minute, and the accumulated infiltration, y, is given in cubic feet per foot cf furrcw. I' or both furrow...

  14. New Irrigation System Design for Maximizing Irrigation Efficiency and Increasing Rainfall Utilization

    E-Print Network [OSTI]

    Lyle, W. M.; Bordovsky, J. P.

    A new concept in irrigation system design, which has the potential of significant savings in both water and energy requirements, has been developed and is under evaluation. The system is characterized by and has been labeled a low energy...

  15. Czech Archaeologists in Uzbekistan Discover Bronze Age Irrigation System

    E-Print Network [OSTI]

    Cerveny, Vlastislav

    Czech Archaeologists in Uzbekistan Discover Bronze Age Irrigation System Compiled 20.11.2014 16 they discovered was settlements dating back to the Iron and Bronze Ages, including a well-preserved irrigation system. The Paschurt Valley is located in the south of Uzbekistan, a country which has become

  16. UBC Social Ecological Economic Development Studies (SEEDS) Student Report An Investigation into New SUB Rooftop Garden Irrigations Systems

    E-Print Network [OSTI]

    SUB Rooftop Garden Irrigations Systems Dale Chang Braeden Hammerl Bhupinder Manhas University Garden Irrigation Systems A Triple-Bottom-Analysis of Irrigation Systems for the New SUB APSC 262 By Dale..............................................................................................................................5 2.0 Over Head Irrigation Systems

  17. Installing a Subsurface Drip Irrigation System for Row Crops

    E-Print Network [OSTI]

    Enciso, Juan

    2004-09-07T23:59:59.000Z

    This publication describes the components of a subsurface drip irrigation system and the procedure for installing such a system. Each step is outlined and illustrated. Steps include tape injection, trenching, connecting drip lines, back...

  18. Wick irrigation systems for subsistence farming

    E-Print Network [OSTI]

    Kuntz, Lauren B

    2013-01-01T23:59:59.000Z

    Irrigation on small-scale farms has been noted as a key method to help lift subsistence farmers out of poverty. With water scarity growing around the globe and lack of access to electricity still prevalent in rural areas, ...

  19. CropIrri: A DECISION SUPPORT SYSTEM FOR CROP IRRIGATION MANAGEMENT

    E-Print Network [OSTI]

    CropIrri: A DECISION SUPPORT SYSTEM FOR CROP IRRIGATION MANAGEMENT Yi Zhang1 , Liping Feng1,* 1: A field crop irrigation management decision-making system (CropIrri) was developed based on the soil water of optimal irrigation methods and irrigation decision support system have obtained important achievements (J

  20. Timing the Last Irrigation Using COTMAN in a LEPA Irrigation System at AG-CARES, Lamesa, Tommy Doederlein, Texas Cooperative Extension, Lamesa, Texas, Brant Baugh, Randy Boman

    E-Print Network [OSTI]

    Mukhtar, Saqib

    TITLE: Timing the Last Irrigation Using COTMAN in a LEPA Irrigation System at AG-CARES, Lamesa, TX past cutout in a LEPA irrigation system. AG-CARES Farm, Lamesa, Texas. 2003. Target HU Accumulation with four replications Plot size: 8 rows by 180 feet Planting Date: May 8 Variety: PM2628RR Irrigation: LEPA

  1. Control rod drive hydraulic system

    DOE Patents [OSTI]

    Ose, Richard A. (San Jose, CA)

    1992-01-01T23:59:59.000Z

    A hydraulic system for a control rod drive (CRD) includes a variable output-pressure CR pump operable in a charging mode for providing pressurized fluid at a charging pressure, and in a normal mode for providing the pressurized fluid at a purge pressure, less than the charging pressure. Charging and purge lines are disposed in parallel flow between the CRD pump and the CRD. A hydraulic control unit is disposed in flow communication in the charging line and includes a scram accumulator. An isolation valve is provided in the charging line between the CRD pump and the scram accumulator. A controller is operatively connected to the CRD pump and the isolation valve and is effective for opening the isolation valve and operating the CRD pump in a charging mode for charging the scram accumulator, and closing the isolation valve and operating the CRD pump in a normal mode for providing to the CRD through the purge line the pressurized fluid at a purge pressure lower than the charging pressure.

  2. UBC Social Ecological Economic Development Studies (SEEDS) Student Report Benefits of Installing Additional Rain Sensors within the UBC Irrigation System

    E-Print Network [OSTI]

    Additional Rain Sensors within the UBC Irrigation System Michael Thiessen, Chelsie Drysdale University of Installing Additional Rain Sensors within the UBC Irrigation System A Business Case Analysis Prepared for: Dr................................................................................................................................................................... 5 DESCRIPTION OF CURRENT UBC IRRIGATION WATER USE

  3. THE USE OF HYDRAULIC MODELS TO OPTIMIZE THE REHABILITATION OF AN OPEN CHANNEL IRRIGATION SYSTEM

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    THE USE OF HYDRAULIC MODELS TO OPTIMIZE THE REHABILITATION OF AN OPEN CHANNEL IRRIGATION SYSTEM of irrigation, as well as the type of control used for managing the system and has led to the use factors like diurnal irrigation or the significant storage capacity of the system, and would lead

  4. Fall 2011 Course Syllabus Course number and title: CIVE 512 -Irrigation Systems Design

    E-Print Network [OSTI]

    Fall 2011 ­ Course Syllabus Course number and title: CIVE 512 - Irrigation Systems Design Credits: 3 Term(s) to be offered: Every Fall semester. Course Description: Irrigation systems principles and design procedures for sound design and operation of sprinkler, trickle, and surface irrigation systems

  5. Coordination in irrigation systems: An analysis of the Lansing-Kremer model of Bali

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    1 Coordination in irrigation systems: An analysis of the Lansing-Kremer model of Bali Marco A@indiana.edu Phone: 812 855 5178 Abstract Farmers within irrigation systems, such as those in Bali, solve complex, synchronization, agent-based model #12;2 1. Introduction The question of whether irrigation systems require

  6. Residential Irrigation System Rainfall Shutoff Devices1 Michael D. Dukes and Dorota Z. Haman2

    E-Print Network [OSTI]

    Jawitz, James W.

    ABE325 Residential Irrigation System Rainfall Shutoff Devices1 Michael D. Dukes and Dorota Z. Haman--are designed to interrupt the cycle of an automatic irrigation system controller when a specific amount of rainfall has occurred. They are small devices wired to the irrigation system controller and mounted

  7. PANSY: a Portable Autonomous Irrigation System Benjamin Beckmann and Ajay Gupta

    E-Print Network [OSTI]

    Gupta, Ajay

    PANSY: a Portable Autonomous Irrigation System Benjamin Beckmann and Ajay Gupta Wireless Sensornet negatively to even the slightest of climatic changes. As such, an automated system of irrigation is ideal of pot bar codes. More specifically, PANSY provides a portable autonomous irrigation system. Experimental

  8. SUBSURFACE DRIP IRRIGATION SYSTEMS FOR SPECIALTY CROP PRODUCTION IN NORTH DAKOTA

    E-Print Network [OSTI]

    Steele, Dean D.

    SUBSURFACE DRIP IRRIGATION SYSTEMS FOR SPECIALTY CROP PRODUCTION IN NORTH DAKOTA D.D.Steele, R.G.Greenland, B. L. Gregor ABSTRACT. Subsurface drip irrigation (SDI) systems offer advantages over other types of irrigation systems for specialty crop production, including water savings, improved trafficability

  9. Modeling the large-scale water balance impact of different irrigation systems

    E-Print Network [OSTI]

    Evans, Jason

    Modeling the large-scale water balance impact of different irrigation systems J. P. Evans1 and B. F precipitation causes the Turkish government to invest in modernizing its own irrigation systems balance impact of different irrigation systems, Water Resour. Res., 44, W08448, doi:10.1029/2007WR006671

  10. Rainwater harvesting system with roof catchment, gutter, downspout, storage and drip irrigation system.

    E-Print Network [OSTI]

    Stephens, Graeme L.

    Rainwater harvesting system with roof catchment, gutter, downspout, storage and drip irrigation:30 am systems: rain barrel, drip irrigation, stock watering Program: 8:30 am ­ 4:00 pm indoor usage system. Douglas County Conservation District and the Rural Water Authority of Douglas County Present: Who

  11. Evaluation of Turfgrass Species and Varieties for Drought Tolerance in a Renovated Linear Gradient Irrigation System

    E-Print Network [OSTI]

    Irrigation System Scientists: B. Wherley and A. Chandra - Texas AgriLife Research- Dallas, and J. Heitholt gradient irrigation system (LGIS) project were to 1) quantify the extent of water stress that different the implications of deficit irrigation practices on reflective heat load generation, and 3) determine how cultural

  12. Toward an Earth System Modeling Approach to Simulate Irrigation...

    Office of Science (SC) Website

    Previous sensitivity studies of irrigation impacts on land surface provide limited analysis of uncertainties from the input data and model irrigation schemes. A team of...

  13. Electric Drive Component Manufacturing: Magna E-Car Systems of...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications Electric Drive Component Manufacturing: Magna E-Car Systems of America, Inc. Electric Drive Component Manufacturing: Magna E-Car Systems...

  14. UBC Social Ecological Economic Development Studies (SEEDS) Student Report An Investigation into New SUB Rooftop Garden Irrigations Systems

    E-Print Network [OSTI]

    SUB Rooftop Garden Irrigations Systems Peter Chow Banda Logawa Michael Chang University of British;1 An Investigation Into Rooftop Garden Irrigation Systems Prepared By: Peter Chow Banda Logawa Michael Chang #12 irrigation system in the new SUB at UBC. They included drip tape, soaker hose and sprinkler irrigation

  15. Improving Motor and Drive System Performance - A Sourcebook for...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    motors and drives, as well as resources for additional information, tools, software, videos, and training opportunities. Improving Motor and Drive System Performance - A...

  16. Oscillation control system for electric motor drive

    DOE Patents [OSTI]

    Slicker, J.M.; Sereshteh, A.

    1988-08-30T23:59:59.000Z

    A feedback system for controlling mechanical oscillations in the torsionally complaint drive train of an electric or other vehicle. Motor speed is converted in a processor to estimate state signals in which a plant model which are used to electronically modify the torque commands applied to the motor. 5 figs.

  17. Oscillation control system for electric motor drive

    DOE Patents [OSTI]

    Slicker, James M. (Union Lake, MI); Sereshteh, Ahmad (Union Lake, MI)

    1988-01-01T23:59:59.000Z

    A feedback system for controlling mechanical oscillations in the torsionally complaint drive train of an electric or other vehicle. Motor speed is converted in a processor to estimate state signals in which a plant model which are used to electronically modify thetorque commands applied to the motor.

  18. Heating and current drive systems for TPX

    SciTech Connect (OSTI)

    Swain, D.; Goranson, P. [Oak Ridge National Lab., TN (United States); Halle, A. von; Bernabei, S.; Greenough, N. [Princeton Univ., NJ (United States). Plasma Physics Lab.

    1994-05-24T23:59:59.000Z

    The heating and current drive (H and CD) system proposed for the TPX tokamak will consist of ion cyclotron, neutral beam, and lower hybrid systems. It will have 17.5 MW of installed H and CD power initially, and can be upgraded to 45 MW. It will be used to explore advanced confinement and fully current-driven plasma regimes with pulse lengths of up to 1,000 s.

  19. H observer for time-delay systems Application to FDI for irrigation canals

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    H observer for time-delay systems Application to FDI for irrigation canals N. Bedjaoui, X. Litrico and isolation for time-varying delayed systems. It consists to develop a H observer that generates residuals occur on the regulation gates of an irrigation canal. The observer design uses a simplified approximate

  20. UBC Social Ecological Economic Development Studies (SEEDS) Student Report An Investigation into New SUB Rooftop Garden Irrigations Systems

    E-Print Network [OSTI]

    SUB Rooftop Garden Irrigations Systems Brianne Dahle John Mollica Hao Zhang University of British Investigation into New SUB Rooftop Garden Irrigation Systems Prepared by: Brianne Dahle John Mollica Hao Zhang to a monitoring system. However, its main focus is a comparative analysis of the considered irrigation systems

  1. Towards an improved understanding of free-riding in collec-tive irrigation systems: proposition of a basic

    E-Print Network [OSTI]

    Richner, Heinz

    1 Towards an improved understanding of free-riding in collec- tive irrigation systems: proposition system dynamics model for collective irrigation management is proposed, which is aimed at improving-riding on water in irrigation systems is addressed. A feedback system is introduced, which builds on the concept

  2. Utilizing the Traction Drive Power Electronics System to Provide...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Traction Drive Power Electronics System to Provide Plug-in Capability for PHEVs Utilizing the Traction Drive Power Electronics System to Provide Plug-in Capability for PHEVs 2009...

  3. UBC Social Ecological Economic Development Studies (SEEDS) Student Report An Investigation into New SUB Rooftop Garden Irrigations Systems

    E-Print Network [OSTI]

    SUB Rooftop Garden Irrigations Systems Harsh Juneja Randy Or Boris Tello Manraj Singh Thind University SUSTAINABILITY REPORT: An Investigation into Rooftop Irrigation Systems Harsh Juneja Randy Or Boris Tello Manraj. Using the triple bottom line analysis, a new recommendation for an irrigation system is made. Sprinklers

  4. UBC Social Ecological Economic Development Studies (SEEDS) Student Report An Investigation into New SUB Rooftop Garden Irrigations Systems

    E-Print Network [OSTI]

    SUB Rooftop Garden Irrigations Systems Seungmin Lee Alexandra Nan Meredith Kealty Kevin Pan University INVESTIGATION OF ROOFTOP GARDEN IRRIGATION SYSTEMS APSC 262 Instructor: Ms. Carla Paterson University of British an irrigation system to keep the garden sufficiently watered during these periods. There is a wide range

  5. SUBSTANTIATION OF SITE SELECTION FOR THE RESEARCH OF SUSTAINABLE WATER MANAGEMENT WITHIN IRRIGATION SYSTEMS OF SOKULUK RIVER

    E-Print Network [OSTI]

    Richner, Heinz

    with the irrigation system which constituted the economic basis for the society, and by late XX century the area and newly operated irrigation systems are especially acute during the period of transition to market economy in water use sector. These issues are especially sensitive in the lower section of irrigation systems

  6. UBC Social Ecological Economic Development Studies (SEEDS) Student Report An Investigation into New SUB Rooftop Garden Irrigations Systems

    E-Print Network [OSTI]

    SUB Rooftop Garden Irrigations Systems William Huang Michael Jewett Callum McGregor Mike Rafa Investigation into Rooftop Garden Irrigation Systems Prepared by: William Huang Michael Jewett Callum Mc & Society #12;i ABSTRACT The objective of this report is to assess a variety of irrigation systems and make

  7. Real-time data acquisition and telemetry based irrigation control system

    DOE Patents [OSTI]

    Slater, John M.; Svoboda, John M.

    2005-12-13T23:59:59.000Z

    A data acquisition and telemetry based control system for use in facilitating substantially real time management of an agricultural irrigation system. The soil moisture sensor includes a reader and a plurality of probes. The probes each include an electronic circuit having a moisture sensing capacitor in operative communication with the soil whose moisture is to be measured. Each probe also includes a receive/transmit antenna and the reader includes a transmit/receive antenna, so that as the reader passes near the probe, the reader transmits a digital excitation signal to the electronic circuit of the biodegradable probe via an inductive couple formed between the transmit/receive antenna of the reader and the receive/transmit coil of the probe. The electronic circuit uses an energy component of the excitation signal to generate a digital data signal which indicates the moisture content of the soil adjacent to the moisture sensing capacitor. The probe sends the data signal to the reader which then uses the data signal to develop a corresponding set of watering instructions which are then transmitted to a control module in communication with the irrigation system. The control module sends corresponding control signals to nozzles of the irrigation system causing the irrigation system to disperse water in a manner consistent with the moisture content data transmitted by the probes to the reader. Because the irrigation system moves continuously through the field to be irrigated, the moisture content data acquisition and resultant water dispersal by the irrigation system occur substantially in real time.

  8. Bulletin No. 779 Irrigated agriculture in Idaho

    E-Print Network [OSTI]

    O'Laughlin, Jay

    to consider many technical, economic, and financial factors when choosing or upgrading an irrigation system relative to sprinkler irrigation systems make surface irrigation an attractive alternative. However, surface irrigation systems generally have higher labor requirements, lower water use efficiencies

  9. Remote Sensing Assessment Of Karez Irrigation Systems And Archaeological Resources In Maywand District, Kandahar Province, Afghanistan

    E-Print Network [OSTI]

    Egitto, Antoinette

    2013-12-31T23:59:59.000Z

    This dissertation focuses on the history, diffusion, and cultural significance of the karez, a form of traditional irrigation system, based on a case study of Maywand District in Kandahar Province, Afghanistan. Remote ...

  10. Development and evaluation of an advance rate feedback irrigation system (ARFIS)

    E-Print Network [OSTI]

    Latimer, Eduardo Alberto

    1987-01-01T23:59:59.000Z

    DEVELOPMENT AND EVALUATION OF AN ADVANCE RATE FEEDBACK IRRIGATION SYSTEM (ARFIS) A Thesis EDUARDO ALBERTO LATIMER Submitted to the Graduate College of Texas ALM University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE August 1987 Major Subject: Agricultural Engineering DEVELOPMENT AND EVALUATION OF AN ADVANCE RATE FEEDBACK IRRIGATION SYSTEM (ARFIS) A Thesis EDUARDO ALBERTO LATIMER Approved as to style and content by: Donald L. Reddell (Chairman) ayne...

  11. An economic analysis of alternative sprinkler irrigation distribution systems on the Southern High Plains of Texas

    E-Print Network [OSTI]

    Pearce, John Christopher

    1973-01-01T23:59:59.000Z

    AN ECONOMIC ANALYSIS OF ALTERNATIVE SPRINKLER IRRIGATION DISTRIBUTION SYSTEMS ON THE SOUTHERN HIGH PLAINS OF TEXAS A Thesis by JOHN CHRISTOPHER PEARCE Submitted to the Graduate College of Texas ASM University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE August 1973 Major Subjects Agricultural Economics AN ECONOMIC ANALYSIS OF ALTERNATIVE SPRINKLER IRRIGATION DISTRIBUTION SYSTEMS ON THE SOUTHERN HIGH PLAINS OF TEXAS A Thesis JOHN CHRISTOPHER PEARCE...

  12. Irrigated Acreage Determination Procedures for Wastewater Application Equipment

    E-Print Network [OSTI]

    SPRINKLER IRRIGATION SYSTEM North Carolina Cooperative Extension Service North Carolina State University #12 IRRIGATION SYSTEM Irrigation continues to be the most practical and cost effective method of applying, irrigation systems have inherent application limitations that make field calibration, irrigation scheduling

  13. A motor drive control system for the Lidar Polarimeter

    E-Print Network [OSTI]

    Leung, Waiming

    1977-01-01T23:59:59.000Z

    A MOTOR DRIVE CONTROL SYSTEM FOR THE LIDAR POLARIMETER A Thesis by Waiming Leung Submitted to the Graduate College of Texas A/M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCF, May 1977 Major... Subject: Electrical Engineering A MOTOR DRIVE CONTROL SYSTEM FOR THE LIDAR POLARIMETER A Thesis by Waiming Leung Approved as to style and content by: Chairman o Comm' ee ea o epartment Member Mem er May 1977 ABSTRACT A Motor Drive Control...

  14. Wind turbine ring/shroud drive system

    DOE Patents [OSTI]

    Blakemore, Ralph W.

    2005-10-04T23:59:59.000Z

    A wind turbine capable of driving multiple electric generators having a ring or shroud structure for reducing blade root bending moments, hub loads, blade fastener loads and pitch bearing loads. The shroud may further incorporate a ring gear for driving an electric generator. In one embodiment, the electric generator may be cantilevered from the nacelle such that the gear on the generator drive shaft is contacted by the ring gear of the shroud. The shroud also provides protection for the gearing and aids in preventing gear lubricant contamination.

  15. Columbia River System Operation Review : Final Environmental Impact Statement, Appendix F: Irrigation, Municipal and Industrial/Water Supply.

    SciTech Connect (OSTI)

    Columbia River System Operations Review (U.S.); United States. Bonneville Power Administration; United States. Army. Corps of Engineers. North Pacific Division; United States. Bureau of Reclamation. Pacific Northwest Region.

    1995-11-01T23:59:59.000Z

    Since the 1930`s, the Columbia River has been harnessed for the benefit of the Northwest and the nation. Federal agencies have built 30 major dams on the river and its tributaries. Dozens of non-Federal projects have been developed as well. The dams provide flood control, irrigation, navigation, hydro-electric power generation, recreation, fish and wildlife, and streamflows for wildlife, anadromous fish, resident fish, and water quality. This is Appendix F of the Environmental Impact Statement for the Columbia River System, focusing on irrigation issues and concerns arrising from the Irrigation and Mitigation of impacts (M&I) working Group of the SOR process. Major subheadings include the following: Scope and process of irrigation/M&I studies; Irrigation/M&I in the Columbia Basin Today including overview, irrigated acreage and water rights, Irrigation and M&I issues basin-wide and at specific locations; and the analysis of impacts and alternative for the Environmental Impact Statement.

  16. Electric Drive Component Manufacturing: Magna E-Car Systems of...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Magna E-Car Systems of America, Inc. Electric Drive Component Manufacturing: Magna E-Car Systems of America, Inc. ATP-LD; Cummins Next Generation Tier 2 Bin 2 Diesel Engine...

  17. Greenhouse Tomato Production with High Saline Nutrient Solution Simulating a Re-circulating Irrigation System without Environmental Discharge

    E-Print Network [OSTI]

    Fay, Noah

    Irrigation System without Environmental Discharge Paula Costa Gene Giacomelli Department of Agriculture conditions (whether resulting from a closed irrigation system or simply increased EC in the nutrient solution for water transport, as well as distribution of nutrients. In Hydroponic systems nutrients are supplied

  18. Drive System for Traction Applications Using 81-Level Converter

    E-Print Network [OSTI]

    Catholic University of Chile (Universidad Católica de Chile)

    of frequency converter. Keywords: vehicle power electronics, vehicle motor drives. I. INTRODUCTION Power Electronics technologies contribute with important part in the development of electric vehicles. On the otherDrive System for Traction Applications Using 81-Level Converter Juan W. Dixon, Micah E. Ortúzar

  19. Grain Sorghum Irrigation

    E-Print Network [OSTI]

    New, Leon

    2004-08-09T23:59:59.000Z

    This publication explains how to supply adequate water to sorghum to achieve optimum yields. Topics include plant growth stages, soils, irrigation systems, pre-plant irrigation, recent research results and management tools....

  20. Estimating spatially-variable rate constants of denitrification in irrigated agricultural groundwater systems using an Ensemble Smoother

    E-Print Network [OSTI]

    Bau, Domenico A.

    an irrigated agricultural river-aquifer system using measurements of (i) nitrate concen- trationEstimating spatially-variable rate constants of denitrification in irrigated agricultural groundwater systems using an Ensemble Smoother Ryan T. Bailey , Domenico A. Baù, Timothy K. Gates Department

  1. Steam Plant, 6% Irrigation,

    E-Print Network [OSTI]

    Zhou, Pei

    Steam Plant, 6% School of Medicine, 17% Irrigation, 3% Hospital, 22% Athletics, 2% Housing, 5 · Rainwater Cisterns · Reducing the number of once through cooling systems in labs · Expediting the connection for Irrigation ~15 million gallons Percent of Water Used for Irrigation that is Non-Potable ~10-15% Number

  2. Traction Drive Systems Breakout | Department of Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in2, 2003Tool ofTopo II:7.1Tracking LivingTraction Drive

  3. Analysis of AET and yield predictions under surface and buried drip irrigation systems using the Crop Model PILOTE and Hydrus-2D

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Analysis of AET and yield predictions under surface and buried drip irrigation systems using) or subsurface drip irrigation systems (SDI) have the ability to increase water productivity (WP result in an interesting tool to help identify the optimal irrigation system design under different soil

  4. M. Bahrami ENSC 283 Tutorial # 8 1 ENSC 283 Week # 12, Tutorial # 8 Flow in an Irrigation System

    E-Print Network [OSTI]

    Bahrami, Majid

    M. Bahrami ENSC 283 Tutorial # 8 1 ENSC 283 Week # 12, Tutorial # 8 ­ Flow in an Irrigation System Problem: Spray heads in an agricultural spraying system are to be supplied with water through 50 of drawn

  5. Analysis of national pay-as-you-drive insurance systems and other variable driving charges

    SciTech Connect (OSTI)

    Wenzel, T.

    1995-07-01T23:59:59.000Z

    Under Pay as You Drive insurance (PAYD), drivers would pay part of their automobile insurance premium as a per-gallon surcharge every time they filled their gas tank. By transfering a portion of the cost of owning a vehicle from a fixed cost to a variable cost, PAYD would discourage driving. PAYD has been proposed recently in California as a means of reforming how auto insurance is provided. PAYD proponents claim that, by forcing drivers to purchase at least part of their insurance every time they refuel their car, PAYD would reduce or eliminate the need for uninsured motorist coverage. Some versions of PAYD proposed in California have been combined with a no-fault insurance system, with the intention of further reducing premiums for the average driver. Other states have proposed PAYD systems that would base insurance premiums on annual miles driven. In this report we discuss some of the qualitative issues surrounding adoption of PAYD and other policies that would convert other fixed costs of driving (vehicle registration, safety/emission control system inspection, and driver license renewal) to variable costs. We examine the effects of these policies on two sets of objectives: objectives related to auto insurance reform, and those related to reducing fuel consumption, CO{sub 2} emissions, and vehicle miles traveled. We pay particular attention to the first objective, insurance reform, since this has generated the most interest in PAYD to date, at least at the state level.

  6. The Wavedriver integrated drive and charger system for electric buses

    SciTech Connect (OSTI)

    Shemmans, D.J.; Green, R.M. [Wavedriver Ltd. (United Kingdom)

    1994-12-31T23:59:59.000Z

    Electric propulsion presents a realistic economic alternative to hydro-carbon fuelled passenger transport. Progress continues to reduce the major cost element - the battery - but other expensive systems, on-board and off-board, are still needed for an electric bus to function. The power conversion systems can be improved considerably, and this paper describes the Wavedriver combined field oriented AC motor drive and high rate charger. The field-oriented control gives high performance as a traction drive, and similar vector control strategies are used for the charging processes; advanced fabrication methods realise low costs. By using the drive system components for charging, the off-board electrical infrastructure components are extremely simple and cost-effective, meaning that opportunistic recharging at convenient locations around a route is feasible. This means that the on-board battery can be optimally sized, without restricting the service range, while reducing capital costs. 4 refs.

  7. Electric machine and current source inverter drive system

    DOE Patents [OSTI]

    Hsu, John S

    2014-06-24T23:59:59.000Z

    A drive system includes an electric machine and a current source inverter (CSI). This integration of an electric machine and an inverter uses the machine's field excitation coil for not only flux generation in the machine but also for the CSI inductor. This integration of the two technologies, namely the U machine motor and the CSI, opens a new chapter for the component function integration instead of the traditional integration by simply placing separate machine and inverter components in the same housing. Elimination of the CSI inductor adds to the CSI volumetric reduction of the capacitors and the elimination of PMs for the motor further improve the drive system cost, weight, and volume.

  8. Best Practices for Energy Efficient Cleanrooms Efficient HVAC Systems: Variable-Speed-Drive Chillers

    E-Print Network [OSTI]

    -Speed-Drive Chillers Tengfang Xu June 15, 2005 The project is funded by the California Energy Commission's Industrial Efficient Cleanrooms Efficient HVAC Water Systems: Variable-Speed-Drive Chillers Tengfang Xu Contents HVAC.............................................................................................. 2 Variable-Speed-Drive Chillers

  9. Functions of An Organization in an Indigenous Irrigation System: A Case Study From a Hill Village of Nepal

    E-Print Network [OSTI]

    Uprety, Laya Prasad

    2000-01-01T23:59:59.000Z

    FUNCTIONS OF AN ORGANIZATION IN AN INDIGENOUS IRRIGATION SYSTEM: A Case Study from a Hill Village of epaI. Agriculture in cpal cOlltributes about 40 percent of the country's tOlal Gross Domestic Product (GDP). But this agricultural economy... ,005 thousand hectares. about 711 thousand Ilcctsrcs or 71.8% is managed by the fanners and the remaining 284 thollsand hectares or 28.2% by the Department 01" Irrigation. About 721 thousand hectares of the farmcr-managed irrigation systems consists of 582...

  10. US DRIVE Vehicle Systems and Analysis Technical Team Roadmap...

    Broader source: Energy.gov (indexed) [DOE]

    DRIVE Technical Teams in determining performance goals and validation metrics. vsattroadmapjune2013.pdf More Documents & Publications US DRIVE Driving Research and Innovation...

  11. The potential effect of sprinkle irrigation systems in ricelands on the occurrence and abundance of mosquito eggs

    E-Print Network [OSTI]

    Rankin, Steven Earl

    1984-01-01T23:59:59.000Z

    THE POTENTIAL EFFECT OF SPRINELE IRRIGATION SYSTEMS IN RICELANDS ON THE OCCURRENCE AND ABUNDANCE OF MOSQUITO EGGS A Thesis STEVEN EARL RANKIN Submitted to the Graduate College of Texas AAM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 1984 Major Subject: Entcmology THE POTENTIAL EFFECT OF SPRINKLE IRRIGATION SYSTEMS IN' RICELANDS ON THE OCCURRENCE AND ABUNDANCE OF MOSQUITO EGGS A Thesis by STEVEN EARL RANKIN Approved as to style...

  12. Irrigation systems are critical for food production and supporting regional economies. The efficiency of these systems plays an important role in the sustainable use of fresh water.The FarmNet project

    E-Print Network [OSTI]

    Heiser, Gernot

    Irrigation systems are critical for food production and supporting regional economies$/hectare/year) · Lower peak demand on irrigation water distribution system resulting in improved quality of service benchmarked against fixed-schedule irrigation systems. Embedded Systems; Networked Systems; Making Sense

  13. GOVERNMENT OF MALAYSIA DEPARTMENT OF IRRIGATION

    E-Print Network [OSTI]

    Julien, Pierre Y.

    , construction, operations and maintenance of large volume water management systems for irrigation, drainageGOVERNMENT OF MALAYSIA DEPARTMENT OF IRRIGATION AND DRAINAGE Jabatan Pengairan dan Saliran Malaysia; Coastal Management; Hydrology and Water Resources; Irrigation and Agricultural Drainage; Geotechnical

  14. Increasing water holding capacity for irrigation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Increasing water holding capacity for irrigation Reseachers recommend solutions for sediment trapping in irrigation system LANL and SNL leveraged technical expertise to determine...

  15. Bichromatic Driving of a Solid State Cavity QED System

    E-Print Network [OSTI]

    Alexander Papageorge; Arka Majumdar; Erik D. Kim; Jelena Vuckovic

    2011-08-27T23:59:59.000Z

    The bichromatic driving of a solid state cavity quantum electrodynamics system is used to probe cavity dressed state transitions and observe coherent interaction between the system and the light field. We theoretically demonstrate the higher order cavity-dressed states, supersplitting, and AC stark shift in a solid state system comprised of a quantum dot strongly coupled to a photonic crystal cavity for on- and far off-resonant cases. For the off-resonant case, phonons mediate off-resonant coupling between the quantum dot and the photonic resonator, a phenomenon unique to solid state cavity quantum electrodynamics.

  16. EV Everywhere: Electric Drive Systems Bring Power to Plug-in...

    Energy Savers [EERE]

    EV Everywhere: Electric Drive Systems Bring Power to Plug-in Electric Vehicles EV Everywhere: Electric Drive Systems Bring Power to Plug-in Electric Vehicles January 31, 2014 -...

  17. Geographic information system (GIS) and simulation model for management of irrigation districts

    E-Print Network [OSTI]

    Nazarov, Azimjon S.

    2000-01-01T23:59:59.000Z

    IDMM (Irrigation District Management Model), a user friendly, GIS based, menu driven personal computer software program, was developed as a planning and management tool for improved water use and crop growth production in irrigation districts...

  18. Comprehensive Irrigation Management 

    E-Print Network [OSTI]

    Cook, K.

    2011-01-01T23:59:59.000Z

    ? Commoditized relationships ? Disconnect with conservation investments & sustainable water savings ? High turnover rates among property managers and landscape contractors ? Economic pressures on operating expense to maintain system integrity Result... for conserving water ? Irrigation manufactures disputed claims regarding documentable savings ? Irrigation professionals blamed for excessive application ? Regulatory agencies not accountable ? Water utilities imposing restrictions & blaming landscapes...

  19. FTIR spectrometer with solid-state drive system

    DOE Patents [OSTI]

    Rajic, Slobodan (Knoxville, TN); Seals, Roland D. (Oak Ridge, TN); Egert, Charles M. (Oak Ridge, TN)

    1999-01-01T23:59:59.000Z

    An FTIR spectrometer (10) and method using a solid-state drive system with thermally responsive members (27) that are subject to expansion upon heating and to contraction upon cooling. Such members (27) are assembled in the device (10) so as to move an angled, reflective surface (22) a small distance. The sample light beam (13) is received at a detector (24) along with a reference light beam (13) and there it is combined into a resulting signal. This allows the "interference" between the two beams to occur for spectral analysis by a processor (29).

  20. Linear hydraulic drive system for a Stirling engine

    DOE Patents [OSTI]

    Walsh, Michael M. (Schenectady, NY)

    1984-02-21T23:59:59.000Z

    A hydraulic drive system operating from the periodic pressure wave produced by a Stirling engine along a first axis thereof and effecting transfer of power from the Stirling engine to a load apparatus therefor and wherein the movable, or working member of the load apparatus is reciprocatingly driven along an axis substantially at right angles to the first axis to achieve an arrangement of a Stirling engine and load apparatus assembly which is much shorter and the components of the load apparatus more readily accessible.

  1. High Precision Control of Indirect Drive Systems Based on End-effector Sensor Information

    E-Print Network [OSTI]

    Han, Cheng-Huei

    2009-01-01T23:59:59.000Z

    Block diagram of a single-joint indirect drive train witha Figure 4.4: Block diagram of a single-joint indirect driveBlock diagram of the control system given in Section 3.6. Single-Joint

  2. Master Gardener Specialist Irrigation Efficiency October 24, 25, 26, 2012

    E-Print Network [OSTI]

    Session of Basic Irrigation Components II. Basic Irrigation System Troubleshooting as related to Water Conservation Learning Objective: Know how to identify the most common problems and landscape irrigation systems:00 ­ 12:00 noon Field/Site Session of Basic Irrigation Components II. Basic Irrigation System

  3. Nonlinear System Modeling, Optimal Cam Design, and Advanced System Control for an Electromechanical Engine Valve Drive

    E-Print Network [OSTI]

    Qiu, Yihui

    A cam-based shear force-actuated electromechanical valve drive system offering variable valve timing in internal combustion engines was previously proposed and demonstrated. To transform this concept into a competitive ...

  4. Economical Aspects of Adjustable Speed Drives in Pumping Systems

    E-Print Network [OSTI]

    Hovstadius, G.

    Speed variations of pumps have become increasingly popular as the technology to produce variable frequency drives has progressed. Variable speed drives have many advantages compared to throttle valves when it comes to regulation of flow. They offer...

  5. Precision Irrigators Network

    E-Print Network [OSTI]

    Bynum, J.; Cothren, T.; Marek, T.; Piccinni, G.

    of decision support systems (DSS) that are used as tools for implementing irrigation BMPs. This DSS guide was developed as a complement to TWDB Report 362, "Water Conservation Best Management Practices Guide," which is a more comprehensive report on water...

  6. Water Use in Agricultural Watersheds Derrel Martin, Professor, Irrigation and Water Resources Engineer, Dept. of Biological Systems

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    Water Use in Agricultural Watersheds Derrel Martin, Professor, Irrigation and Water Resources Engineer, Dept. of Biological Systems Engineering, UNL Background Concerns about water use have intensified and Republican River Basins, and the implementation of LB 962. To understand water use it is helpful to consider

  7. Break-Even Investment in a Wind Energy Conversion System for an Irrigated Farm on the Texas High Plains

    E-Print Network [OSTI]

    Hardin, D. C.; Lacewell, R. D.

    1981-01-01T23:59:59.000Z

    The purpose of this study was to quantify the benefits of using a wind energy system for irrigation. The value of wind energy was estimated on both a static basis (where the annual value of wind power was assumed to be constant over the life...

  8. Break-Even Investment in a Wind Energy Conversion System for an Irrigated Farm on the Texas High Plains 

    E-Print Network [OSTI]

    Hardin, D. C.; Lacewell, R. D.

    1981-01-01T23:59:59.000Z

    The purpose of this study was to quantify the benefits of using a wind energy system for irrigation. The value of wind energy was estimated on both a static basis (where the annual value of wind power was assumed to be constant over the life...

  9. Effect of component aging on PWR control rod drive systems

    SciTech Connect (OSTI)

    Grove, E.; Gunther, W.; Sullivan, K.

    1992-01-01T23:59:59.000Z

    An aging assessment of PWR control rod drive (CRD) systems has been completed as part of the US NRC Nuclear Plant Aging Research (NPAR) Program. The design, construction, maintenance, and operation of the Babcock Wilcox (B W), Combustion Engineering (CE), and Westinghouse (W) systems were evaluated to determine the potential for degradation as each system ages. Operating experience data were evaluated to identify the predominant failure modes, causes, and effects. This, coupled with an assessment of the materials of construction and operating environment, demonstrate that each design is subject to degradation, which if left unchecked, could affect its safety function as the plant ages. An industry survey, conducted with the assistance of EPRI and NUMARC, identified current CRD system maintenance and inspection practices. The results of this survey indicate that some plants have performed system modifications, replaced components, or augmented existing preventive maintenance practices in response to system aging. The survey results also supported the operating experience data, which concluded that the timely replacement of degraded components, prior to failure, was not always possible using existing condition monitoring techniques. The recommendations presented in this study also include a discussion of more advanced monitoring techniques, which provide trendable results capable of detecting aging.

  10. Effect of component aging on PWR control rod drive systems

    SciTech Connect (OSTI)

    Grove, E.; Gunther, W.; Sullivan, K.

    1992-06-01T23:59:59.000Z

    An aging assessment of PWR control rod drive (CRD) systems has been completed as part of the US NRC Nuclear Plant Aging Research (NPAR) Program. The design, construction, maintenance, and operation of the Babcock & Wilcox (B & W), Combustion Engineering (CE), and Westinghouse (W) systems were evaluated to determine the potential for degradation as each system ages. Operating experience data were evaluated to identify the predominant failure modes, causes, and effects. This, coupled with an assessment of the materials of construction and operating environment, demonstrate that each design is subject to degradation, which if left unchecked, could affect its safety function as the plant ages. An industry survey, conducted with the assistance of EPRI and NUMARC, identified current CRD system maintenance and inspection practices. The results of this survey indicate that some plants have performed system modifications, replaced components, or augmented existing preventive maintenance practices in response to system aging. The survey results also supported the operating experience data, which concluded that the timely replacement of degraded components, prior to failure, was not always possible using existing condition monitoring techniques. The recommendations presented in this study also include a discussion of more advanced monitoring techniques, which provide trendable results capable of detecting aging.

  11. Hybrid-drive implosion system for ICF targets

    DOE Patents [OSTI]

    Mark, J.W.K.

    1987-10-14T23:59:59.000Z

    Hybrid-drive implosion systems for ICF targets are described which permit a significant increase in target gain at fixed total driver energy. The ICF target is compressed in two phases, an initial compression phase and a final peak power phase, with each phase driven by a separate, optimized driver. The targets comprise a hollow spherical ablator surroundingly disposed around fusion fuel. The ablator is first compressed to higher density by a laser system, or by an ion beam system, that in each case is optimized for this initial phase of compression of the target. Then, following compression of the ablator, energy is directly delivered into the compressed ablator by an ion beam driver system that is optimized for this second phase of operation of the target. The fusion fuel is driven, at high gain, to conditions wherein fusion reactions occur. This phase separation allows hydrodynamic efficiency and energy deposition uniformity to be individually optimized, thereby securing significant advantages in energy gain. In additional embodiments, the same or separate drivers supply energy for ICF target implosion. 3 figs.

  12. Hybrid-drive implosion system for ICF targets

    DOE Patents [OSTI]

    Mark, James W. (Danville, CA)

    1988-01-01T23:59:59.000Z

    Hybrid-drive implosion systems (20,40) for ICF targets (10,22,42) are described which permit a significant increase in target gain at fixed total driver energy. The ICF target is compressed in two phases, an initial compression phase and a final peak power phase, with each phase driven by a separate, optimized driver. The targets comprise a hollow spherical ablator (12) surroundingly disposed around fusion fuel (14). The ablator is first compressed to higher density by a laser system (24), or by an ion beam system (44), that in each case is optimized for this initial phase of compression of the target. Then, following compression of the ablator, energy is directly delivered into the compressed ablator by an ion beam driver system (30,48) that is optimized for this second phase of operation of the target. The fusion fuel (14) is driven, at high gain, to conditions wherein fusion reactions occur. This phase separation allows hydrodynamic efficiency and energy deposition uniformity to be individually optimized, thereby securing significant advantages in energy gain. In additional embodiments, the same or separate drivers supply energy for ICF target implosion.

  13. As you know, water costs continue to rise, but you can do something to help yourself. Households can check their plumbing fixtures and irrigation systems for leaks. This checklist will

    E-Print Network [OSTI]

    . Households can check their plumbing fixtures and irrigation systems for leaks. This checklist will help you a certification program focused on water efficiency to ensure that your in-ground irrigation system is not leaking tape and a wrench. 8. Consult with an irrigation installer (WaterSense partner) who has passed

  14. assisted driving system: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    - TxSpace Summary: and Quantitative Account Gear-Train Servo Error Types. IV. DC VARIABLE SPEED MOTOR DRIVE DESIGN CONSIDERATIONS AND RFALIZATION. Introduction. 27 29 30...

  15. Driving the Future Argonne's vehicle systems reseArch

    E-Print Network [OSTI]

    Kemner, Ken

    and commercialization of next- generation vehicles. APRF engineers use the facility's two-wheel drive (2WD) and four, drivetrain components, control strategies and

  16. EV Everywhere Workshop: Traction Drive Systems Breakout Group...

    Energy Savers [EERE]

    Presentation given at the EV Everywhere Grand Challenge Electric Drive (Power Electronics and Electric Machines) Workshop on July 24, 2012 held at the Doubletree O'Hare,...

  17. The Irrigation Technology Center Vision and Concept

    E-Print Network [OSTI]

    for agricultural and landscape irrigation systems, establish an equipment testing and certification program exist for irrigation systems and most consumers do not have the expertise to determine if the systems irrigation systems to provide hands-on instruction, testing and performance evaluations, and applied research

  18. Smarter irrigation Kati Migliaccio, PhD PE

    E-Print Network [OSTI]

    Migliaccio, Kati White

    Network ­ http://fawn.ifas.ufl.edu 3 #12;Irrigation systems · Use and popularity of automated systems · 47% more water is used by automated irrigation systems than non-automated systems for landscape irrigation sensor on all automated irrigation systems (s.373.62 Florida Statutes, 1991) · Miami-Dade County water

  19. A Hydrodynamic Study of Flow in Irrigation Furrows

    E-Print Network [OSTI]

    Wilke, O.C.

    how these reduced rates of application can be utilized to design furrow irrigation distribution systems to obtain improved irrigation efficiencies and subsurface water distribution patterns....

  20. Evaluation of 2004 Toyota Prius Hybrid Electric Drive System

    SciTech Connect (OSTI)

    Staunton, Robert H [ORNL; Ayers, Curtis William [ORNL; Chiasson, J. N. [University of Tennessee, Knoxville (UTK); Burress, Timothy A [ORNL; Marlino, Laura D [ORNL

    2006-05-01T23:59:59.000Z

    The 2004 Toyota Prius is a hybrid automobile equipped with a gasoline engine and a battery- and generator-powered electric motor. Both of these motive-power sources are capable of providing mechanical-drive power for the vehicle. The engine can deliver a peak-power output of 57 kilowatts (kW) at 5000 revolutions per minute (rpm) while the motor can deliver a peak-power output of 50 kW over the speed range of 1200-1540 rpm. Together, this engine-motor combination has a specified peak-power output of 82 kW at a vehicle speed of 85 kilometers per hour (km/h). In operation, the 2004 Prius exhibits superior fuel economy compared to conventionally powered automobiles. To acquire knowledge and thereby improve understanding of the propulsion technology used in the 2004 Prius, a full range of design characterization studies were conducted to evaluate the electrical and mechanical characteristics of the 2004 Prius and its hybrid electric drive system. These characterization studies included (1) a design review, (2) a packaging and fabrication assessment, (3) bench-top electrical tests, (4) back-electromotive force (emf) and locked rotor tests, (5) loss tests, (6) thermal tests at elevated temperatures, and most recently (7) full-design-range performance testing in a controlled laboratory environment. This final test effectively mapped the electrical and thermal results for motor/inverter operation over the full range of speeds and shaft loads that these assemblies are designed for in the Prius vehicle operations. This testing was undertaken by the Oak Ridge National Laboratory (ORNL) as part of the U.S. Department of Energy (DOE) - Energy Efficiency and Renewable Energy (EERE) FreedomCAR and Vehicle Technologies (FCVT) program through its vehicle systems technologies subprogram. The thermal tests at elevated temperatures were conducted late in 2004, and this report does not discuss this testing in detail. The thermal tests explored the derating of the Prius motor design if operated at temperatures as high as is normally encountered in a vehicle engine. The continuous ratings at base speed (1200 rpm) with different coolant temperatures are projected from test data at 900 rpm. A separate, comprehensive report on this thermal control study is available [1].

  1. Evaluation of 2004 Toyota Prius Hybrid Electric Drive System

    SciTech Connect (OSTI)

    Staunton, R.H.; Ayers, C.W.; Chiasson, J.N. (U Tennessee-Knoxville); Burress, B.A. (ORISE); Marlino, L.D.

    2006-05-01T23:59:59.000Z

    The 2004 Toyota Prius is a hybrid automobile equipped with a gasoline engine and a battery- and generator-powered electric motor. Both of these motive-power sources are capable of providing mechanical-drive power for the vehicle. The engine can deliver a peak-power output of 57 kilowatts (kW) at 5000 revolutions per minute (rpm) while the motor can deliver a peak-power output of 50 kW over the speed range of 1200-1540 rpm. Together, this engine-motor combination has a specified peak-power output of 82 kW at a vehicle speed of 85 kilometers per hour (km/h). In operation, the 2004 Prius exhibits superior fuel economy compared to conventionally powered automobiles. To acquire knowledge and thereby improve understanding of the propulsion technology used in the 2004 Prius, a full range of design characterization studies were conducted to evaluate the electrical and mechanical characteristics of the 2004 Prius and its hybrid electric drive system. These characterization studies included (1) a design review, (2) a packaging and fabrication assessment, (3) bench-top electrical tests, (4) back-electromotive force (emf) and locked rotor tests, (5) loss tests, (6) thermal tests at elevated temperatures, and most recently (7) full-design-range performance testing in a controlled laboratory environment. This final test effectively mapped the electrical and thermal results for motor/inverter operation over the full range of speeds and shaft loads that these assemblies are designed for in the Prius vehicle operations. This testing was undertaken by the Oak Ridge National Laboratory (ORNL) as part of the U.S. Department of Energy (DOE)-Energy Efficiency and Renewable Energy (EERE) FreedomCAR and Vehicle Technologies (FCVT) program through its vehicle systems technologies subprogram. The thermal tests at elevated temperatures were conducted late in 2004, and this report does not discuss this testing in detail. The thermal tests explored the derating of the Prius motor design if operated at temperatures as high as is normally encountered in a vehicle engine. The continuous ratings at base speed (1200 rpm) with different coolant temperatures are projected from test data at 900 rpm. A separate, comprehensive report on this thermal control study is available [1].

  2. High Frequency Effects of Variable Frequency Drives (VFD) on Electrical Submersible Pump (ESP) Systems

    E-Print Network [OSTI]

    Ozkentli, Esra

    2012-10-19T23:59:59.000Z

    Variable frequency drives (VFD) and subsea (umbilical) cables are frequently used in electrical submersible pump (ESP) systems for offshore platforms. There are two basic system configurations for ESP systems; VFD can be installed on the platform...

  3. Water sensors with cellular system eliminate tail water drainage in alfalfa irrigation

    E-Print Network [OSTI]

    Saha, Rajat; Raghuwanshi, Narendra S; Upadhyaya, Shrinivasa K; Wallender, Wesley W.; Slaughter, David C

    2011-01-01T23:59:59.000Z

    2003. Improving irrigation water management of alfalfa. In:number, sensor number and water arrival time. Wire meshplate Terminals Fig. 1. The water-arrival, or wetting-front,

  4. Irrigation Districts: Establishment of Electric Light and Power Systems: Powers (Nebraska)

    Broader source: Energy.gov [DOE]

    Irrigation districts, created in section 46-1xx, are encouraged to appropriate water in order to generate electric light and power. The Department of Natural Resources has the authority to approve...

  5. UBC Social Ecological Economic Development Studies (SEEDS) Student Report Elevator Drive Systems Energy Consumption Study Report

    E-Print Network [OSTI]

    Energy Consumption Study Report Benny ChunYin Chan University of British Columbia EECE 492 April 6th the current status of the subject matter of a project/report". #12;Elevator Drive Systems Energy Consumption Study Report April 2012 0 2012 Elevator Drive Systems Energy Consumption Study Report Benny CY Chan UBC

  6. Development of an efficient off-grid pumping system and evaporation reduction strategies to increase access to irrigation for smallholder farmers in India

    E-Print Network [OSTI]

    Gorbaty, Emily

    2013-01-01T23:59:59.000Z

    Due to the unavailability of electricity, about 85% of groundwater irrigation in eastern India employs fuel-powered surface pumps, which can have system efficiencies as low as 5%. As fuel prices continue to rise, impoverished ...

  7. Break-even investment in a wind-energy-conversion system for an irrigated farm on the Texas High Plains

    SciTech Connect (OSTI)

    Hardin, D.C.

    1981-01-01T23:59:59.000Z

    The purpose of this study was to quantify the benefits of using a wind energy system for irrigation. The value of wind energy was estimated on both a static basis (where the annual value of wind power was assumed to be constant over the life of the machine) and on a temporal basis (where the annual value of wind power was estimated recursively). The model for static analysis contained two components which applied consecutively. The first was a linear programming (LP) model for the High Plains region. Production activities were included that allowed both optimal and non-optimal timing of post-plant irrigations, giving the producer added flexibility in the employment of limiting water resources. For the temporal analysis, a FORTRAN subroutine was added to the LP model to operate the model recursively over the life of the wind system and to account for the annual decline of the aquifer. Both fixed and variable costs were included. Two wind machines were analyzed, with rated outputs of 40 and 60 kilowatts (kW). Each was applied to the Northern and Southern Texas High Plains over a range of land and water resources situations. Break-even investiment was estimated at discount rates of 3, 5, and 10%. Results indicate that, at least in the future when wind-system costs decrease and stabilize, wind-assisted irrigation could be an economically viable alternative for Texas High Plains producers.

  8. Variable Speed Drive (VSD) Applications in Dual-Duct Constant Volume Systems

    E-Print Network [OSTI]

    Joo, I.; Liu, M.; Conger, K.; Wang, G.

    2002-01-01T23:59:59.000Z

    Models have been developed for static pressure and potential supply fan energy savings by using variable speed drive (VSD) in dual-duct constant volume systems. Experiments have been performed using a full size dual-duct constant volume system...

  9. Irrigated Acreage Determination Procedures for Wastewater Application Equipment

    E-Print Network [OSTI]

    IRRIGATION SYSTEM North Carolina Cooperative Extension Service North Carolina State University #12;Irrigation that the nutrients contained in the wastewater can be used by growing crops. However, irrigation systems have in the application area. Step-by-step guidelines for field calibration of hard hose traveler irrigation systems

  10. Master Gardener Specialist Irrigation Efficiency October 24, 25, 26, 2012

    E-Print Network [OSTI]

    Conservation Education Programs Classroom Session of Basic Irrigation Components II. Basic Irrigation System and landscape irrigation systems from a water conservation perspective A. General overview of application Irrigation System Troubleshooting as related to Water Conservation Learning Objective: Know how to identify

  11. Research Indicates Sprinkler Irrigation Use Could Reduce Groundwater Nitrate Levels

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    and Vicki Miller Irrigating with sprinkler instead of furrow irrigation systems can reduce shallow of irrigation systems on three corn test fields near Shelton, Neb., leave little doubt that if more center pivot Management System Evaluation Area near Shelton from spring 1991 to fall 1996. Irrigation methods

  12. Hydrologic Modeling of a Canal-Irrigated Agricultural Watershed with Irrigation Best Management

    E-Print Network [OSTI]

    a hydrologic perspective. In this study, an approach is developed to model canal irrigation systems understanding of irrigation systems and a proper represen- tation of them in watershed models are required it for modeling purposes. Therefore, the next alternative is to use a model to simulate irrigation systems

  13. Causes and Management of Runoff from Surface Irrigation

    E-Print Network [OSTI]

    Ishida, Yuko

    . runoff in Surface irrigaTion Many orchards in California use surface irrigation systems such as furrow irrigation systems should be closely managed to mini- mize surface runoff. This requires turning the waterCauses and Management of Runoff from Surface Irrigation in Orchards Lawrence J. SchwankL, UC

  14. Low speed control of a DC motor driving a mechanical system with fuzzy adaptive compensation 

    E-Print Network [OSTI]

    Hyun, Dongyoon

    1997-01-01T23:59:59.000Z

    A fuzzy adaptive feedforward control scheme in conjunction with classical feedback control is proposed for the low speed control of DC motors driving mechanical systems in the presence of friction. In the fuzzy adaptive scheme, a fuzzy logic based...

  15. 13th International Conference on Magnetically Levitated Systems and Linear Drives

    SciTech Connect (OSTI)

    Not Available

    1993-09-01T23:59:59.000Z

    This report contains short papers on research being conducted throughout the world on magnetically levitated systems, mainly consisting of trains, and magnetic linear drives. These papers have been index separately elsewhere on the data base.

  16. The Influence of Trickle Irrigation on the Quality of Irrigation Return Flow

    E-Print Network [OSTI]

    Brown, K. W.; Gerard, C. J.; DeMichele, D. W.; Sharpe, P. J. H.; Hipp, B. W.

    treatment including two different qualities of irrigation water applied through a trickle irrigation system. Both moisture and salt balances were followed inside and outside the lysimeters during a growing season the remainder of the calendar year. A sorghum...

  17. Enhanced Recovery Utilizing Variable Frequency Drives and a Distributed Power System

    SciTech Connect (OSTI)

    Randy Peden; Sanjiv Shah

    2005-07-26T23:59:59.000Z

    This report describes complete results of the project entitled ''Enhanced Recovery Utilizing Variable Frequency Drives and a Distributed Power System''. This demonstration project was initiated in July 2003 and completed in March 2005. The objective of the project was to develop an integrated power production/variable frequency drive system that could easily be deployed in the oil field that would increase production and decrease operating costs. This report describes all the activities occurred and documents results of the demonstration.

  18. Solar receiver heliostat reflector having a linear drive and position information system

    DOE Patents [OSTI]

    Horton, Richard H. (Schenectady, NY)

    1980-01-01T23:59:59.000Z

    A heliostat for a solar receiver system comprises an improved drive and control system for the heliostat reflector assembly. The heliostat reflector assembly is controllably driven in a predetermined way by a light-weight drive system so as to be angularly adjustable in both elevation and azimuth to track the sun and efficiently continuously reflect the sun's rays to a focal zone, i.e., heat receiver, which forms part of a solar energy utilization system, such as a solar energy fueled electrical power generation system. The improved drive system includes linear stepping motors which comprise low weight, low cost, electronic pulse driven components. One embodiment comprises linear stepping motors controlled by a programmed, electronic microprocessor. Another embodiment comprises a tape driven system controlled by a position control magnetic tape.

  19. System studies of rf current drive for MST

    SciTech Connect (OSTI)

    Anderson, J. K.; Burke, D. R.; Forest, C. B.; Goetz, J. A.; Hendries, E. R.; Seltzman, A. H.; Thomas, M. A. [Department of Physics, University of Wisconsin, Madison, WI (United States); Diem, S. [Oak Ridge National Laboratory, Oak Ridge TN (United States); Harvey, R. W. [CompX, Del Mar, CA (United States); Kaufman, M. C. [Department of Physics, University of Wisconsin, Madison, WI (United States); Oak Ridge National Laboratory, Oak Ridge, TN (United States)

    2011-12-23T23:59:59.000Z

    Two rf schemes are being studied on the MST reversed field pinch for their potential in current profile control experiments. MHD modeling has shown that a substantial externally-driven off axis parallel current can improve stability of the dominant core tearing modes. A radially localized axisymmetric population of fast electrons has been observed by SXR emission during LH injection (100kW at 800MHz), and is consistent with CQL3D modeling which predicts a small driven current. Computational work suggests that doubling the input power will statistically improve the LH-induced SXR signal to background ratio, and that about 2MW of injected power (an order of magnitude increase) will drive enough current for stabilization of tearing modes. Additionally, a 1 MW 5.5 GHz electron Bernstein wave (EBW) experiment is under construction, which utilizes a very simple and compact antenna compatible with the demands of the RFP. EBW allows access to electron cyclotron heating and current drive in the overdense plasma. Coupling of the external electromagnetic wave to the EBW has been demonstrated, and initial tests at {approx}100kW power have produced a small, localized xray flux consistent with rf heating and high diffusivity of fast electrons. Computational work is currently underway to answer the very important questions of how much power is required, and what level of electron diffusivity is tolerable, to generate a consequential amount of EBW current.

  20. Opportunities for Demand Response in California Agricultural Irrigation: A Scoping Study

    SciTech Connect (OSTI)

    Marks, Gary; Wilcox, Edmund; Olsen, Daniel; Goli, Sasank

    2013-01-02T23:59:59.000Z

    California agricultural irrigation consumes more than ten billion kilowatt hours of electricity annually and has significant potential for contributing to a reduction of stress on the grid through demand response, permanent load shifting, and energy efficiency measures. To understand this potential, a scoping study was initiated for the purpose of determining the associated opportunities, potential, and adoption challenges in California agricultural irrigation. The primary research for this study was conducted in two ways. First, data was gathered and parsed from published sources that shed light on where the best opportunities for load shifting and demand response lie within the agricultural irrigation sector. Secondly, a small limited survey was conducted as informal face-to-face interviews with several different California growers to get an idea of their ability and willingness to participate in permanent load shifting and/or demand response programs. Analysis of the data obtained from published sources and the survey reveal demand response and permanent load shifting opportunities by growing region, irrigation source, irrigation method, grower size, and utility coverage. The study examines some solutions for demand response and permanent load shifting in agricultural irrigation, which include adequate irrigation system capacity, automatic controls, variable frequency drives, and the contribution from energy efficiency measures. The study further examines the potential and challenges for grower acceptance of demand response and permanent load shifting in California agricultural irrigation. As part of the examination, the study considers to what extent permanent load shifting, which is already somewhat accepted within the agricultural sector, mitigates the need or benefit of demand response for agricultural irrigation. Recommendations for further study include studies on how to gain grower acceptance of demand response as well as other related studies such as conducting a more comprehensive survey of California growers.

  1. Rim-drive cable-aligned heliostat collector system

    DOE Patents [OSTI]

    Dolan, J.E.; Sands, T.D.

    1982-09-30T23:59:59.000Z

    Disclosed is a heliostat collector apparatus comprising at least one heliostat suspended from a plurality of longitudinally extending linkage means. An enclosure structure is disposed adjacent the heliostat and provides a means for allowing the heliostat to be substantially protected from weathering. A first drive means is operatively connected to the heliostat to effect steering thereof in at least one of first and second predetermined directions. Finally, a frame member is adapted for supporting the heliostat at an inner portion thereof. The frame includes a plurality of outer expandable portions. Each one of the expandable portions is adapted to slidably engage a corresponding one of the plurality of linkage means. The expandable portions are further adapted to allow the heliostat to be slidably moved along the linkage means in directions away from and towards the enclosure structure and to substantially reduce stress acting on the heliostat during steering.

  2. Rim-drive cable-aligned heliostat collector system

    DOE Patents [OSTI]

    Dolan, James E. (Denver, CO); Sands, Timothy D. (Berkeley, CA)

    1984-01-01T23:59:59.000Z

    Disclosed is a heliostat collector apparatus comprising at least one heliostat suspended from a plurality of longitudinally extending linkage means. An enclosure structure is disposed adjacent the heliostat and provides a means for allowing the heliostat to be substantially protected from weathering. A first drive means is operatively connected to the heliostat to effect steering thereof in at least one of first and second predetermined directions. Finally, a frame member is adapted for supporting the heliostat at an inner portion thereof. The frame includes a plurality of outer expandable portions. Each one of the expandable portions is adapted to slidably engage a corresponding one of the plurality of linkage means. The expandable portions are further adapted to allow the heliostat to be slidably moved along the linkage means in directions away from and towards the enclosure structure and to substantially reduce stress acting on the heliostat during steering.

  3. Comparison of the Unique Mobility and DOE-developed ac electric drive systems

    SciTech Connect (OSTI)

    Cole, G.H.

    1993-01-01T23:59:59.000Z

    A comparison was made between the most recent DOE-developed AC electric vehicle drive systems and that which is independently under development by Unique Mobility of Golden, Colorado. The DOE-developed AC systems compared in this study are the Single-Shaft Electric Propulsion System (ETX-II) developed by Ford Motor Company and the General Electric Company under contract number DE-AC07-85NV10418, the Dual-Shaft Electric Propulsion (DSEP) System developed by Eaton Corporation under contract number DOE-AC08-84NV-10366, and the anticipated results of the Modular Electric Vehicle (MEV) system currently being developed by Ford and General Electric under contract number DE-AC07-90ID13019. The Unique Mobility brushless DC electric vehicle drive system represents their latest electric drive technology and is being developed in cooperation with BMW Technik Gmbh of Germany. Comparisons of specific volume, specific weight, efficiency and expected vehicle performance are made of the different systems based upon measured system performance data where available. One conclusion presented is that the Unique Mobility drive system under development with BMW appears to provide comparable performance to the AC systems studied.

  4. System and method for determining stator winding resistance in an AC motor using motor drives

    DOE Patents [OSTI]

    Lu, Bin; Habetler, Thomas G; Zhang, Pinjia

    2013-02-26T23:59:59.000Z

    A system and method for determining the stator winding resistance of AC motors is provided. The system includes an AC motor drive having an input connectable to an AC source and an output connectable to an input terminal of an AC motor, a pulse width modulation (PWM) converter having switches therein to control current flow and terminal voltages in the AC motor, and a control system connected to the PWM converter. The control system generates a command signal to cause the PWM converter to control an output of the AC motor drive corresponding to an input to the AC motor, selectively generates a modified command signal to cause the PWM converter to inject a DC signal into the output of the AC motor drive, and determines a stator winding resistance of the AC motor based on the DC signal of at least one of the voltage and current.

  5. Electric Motor Drive Selection Issues for HEV Propulsion Systems: A Comparative Study

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Electric Motor Drive Selection Issues for HEV Propulsion Systems: A Comparative Study M. Zeraoulia1 and on an effective comparison of the performances of the four main electric propulsion systems that are the dc motor, the induction motor, the permanent magnet synchronous motor, and the switched reluctance motor. The main

  6. IRRIGATION RESEARCH CONTINUES AT SWMREC Ron Goldy, Mathieu Ngouajio and Jeff Andresen

    E-Print Network [OSTI]

    in irrigation systems. Drip irrigation research began in 2002 at the Southwest Michigan Research and ExtensionIRRIGATION RESEARCH CONTINUES AT SWMREC Ron Goldy, Mathieu Ngouajio and Jeff Andresen Irrigation) to solenoids which allowed treatments to be irrigated one hour when the tensiometer reached the determined

  7. Improving Motor and Drive System Performance: A Sourcebook for Industry

    SciTech Connect (OSTI)

    Not Available

    2008-09-01T23:59:59.000Z

    This is one in a series of sourcebooks to assist industrial personnel in understanding and optimizing motors and motor-driven systems

  8. Multi-Agent Active Interaction with Driving Assistance Systems

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    with an experimental vehicle. We report some illustrative collaboration between the driver and the machine. Index Terms-agent system is used as a "digital butler" that does the interface between the driver and the machine. In order), Intelligent Speed Adaptation (ISA) or Collision Warning Systems (CWS). When designed with a safe Human-Machine

  9. Passive pavement-mounted acoustical linguistic drive alert system and method

    DOE Patents [OSTI]

    Kisner, Roger A. (Knoxville, TN); Anderson, Richard L. (Oak Ridge, TN); Carnal, Charles L. (Cookeville, TN); Hylton, James O. (Clinton, TN); Stevens, Samuel S. (Harriman, TN)

    2001-01-01T23:59:59.000Z

    Systems and methods are described for passive pavement-mounted acoustical alert of the occupants of a vehicle. A method of notifying a vehicle occupant includes providing a driving medium upon which a vehicle is to be driven; and texturing a portion of the driving medium such that the textured portion interacts with the vehicle to produce audible signals, the textured portion pattern such that a linguistic message is encoded into the audible signals. The systems and methods provide advantages because information can be conveyed to the occupants of the vehicle based on the location of the vehicle relative to the textured surface.

  10. Drive laser system for the DC-SRF photoinjector at Peking University

    E-Print Network [OSTI]

    Wang, Zhiwen; Lin, Lin; Zhao, Gang; Quan, Shengwen; Liu, Kexin; Chen, Jiaer

    2015-01-01T23:59:59.000Z

    Photoinjectors are widely used for linear accelerators as electron sources to generate high-brightness electron beam. Drive laser, which determines the timing structure and quality of the electron beam, is a crucial device of photoinjector. A new drive laser system has been designed and constructed for the upgraded 3.5-cell DC-SRF photoinjector at Peking University. The drive laser system consists of a 1064 nm laser oscillator, a four- stage amplifier, the second and fourth harmonic generators, the optical system to transfer the UV pulses to the photocathode, and the synchronization system. The drive laser system has been successfully applied in the stable operation of DC-SRF photoinjector and its performance meets the requirements. 266 nm laser with an average power close to 1W can be delivered to illuminate the Cs2Te photocathode and the instability is less than 5% for long time operation. The design consideration for improving the UV laser quality, a detailed description of laser system, and its performanc...

  11. Irrigation Water Management for the Texas High Plains: A Research Summary

    E-Print Network [OSTI]

    Sweeten, John M.; Jordan, Wayne R.

    at later stages of crop growth especially for conventional graded furrow irrigation systems. Conservation tillage can reduce the need for preplant irrigation of sorghum through improved soil moisture storage. Irrigation water use efficiencies may reach 400...

  12. Towards Designing Experiences for Advanced Driving Assistance Systems

    E-Print Network [OSTI]

    Schwarz1 , Henri Palleis1,2 , Josef Schumann1 1 BMW Group Research and Technology, Hanauer StraÃ?e 46 {Martin.Knobel, Felix.Schwarz, Henri.Palleis, Josef.Schumann}@bmw.de Abstract. This paper describes in the car environment can help the driver to avoid collisions. To increase the acceptance of such a system

  13. Evaluation of 2005 Honda Accord Hybrid Electric Drive System

    SciTech Connect (OSTI)

    Staunton, R.H.; Burress, T.A.; Marlino, L.D.

    2006-09-11T23:59:59.000Z

    The Hybrid Electric Vehicle (HEV) program officially began in 1993 as a five-year, cost-shared partnership between the U.S. Department of Energy (DOE) and American auto manufacturers: General Motors, Ford, and Daimler Chrysler. Currently, HEV research and development is conducted by DOE through its FreedomCAR and Vehicle Technologies (FCVT) program. The mission of the FCVT program is to develop more energy efficient and environmentally friendly highway transportation technologies. Program activities include research, development, demonstration, testing, technology validation, and technology transfer. These activities are aimed at developing technologies that can be domestically produced in a clean and cost-competitive manner. The vehicle systems technologies subprogram, which is one of four subprograms under the FCVT program, supports the efforts of the FreedomCAR through a three-phase approach [1] intended to: (1) Identify overall propulsion and vehicle-related needs by analyzing programmatic goals and reviewing industry's recommendations and requirements, then develop the appropriate technical targets for systems, subsystems, and component research and development activities; (2) Develop and validate individual subsystems and components, including electric motors, emission control devices, battery systems, power electronics, accessories, and devices to reduce parasitic losses; and (3) Determine how well the components and subassemblies work together in a vehicle environment or as a complete propulsion system and whether the efficiency and performance targets at the vehicle level have been achieved. The research performed under the vehicle systems subprogram will help remove technical and cost barriers to enable technology for use in such advanced vehicles as hybrid electric, plug-in electric, and fuel-cell-powered vehicles.

  14. tel-00422363,version1-6Oct2009 Irrigation management

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    to the complexity of irrigation systems. Instead, the approach should be evaluated for its effectiveness in supporting actors' decisions in irrigation system management, by enhancing their understanding of the effects, and captures adequately the complexity of an irrigation system, thus providing indications about its

  15. Setting a Global Standard for Sustainable Irrigated Catchments

    E-Print Network [OSTI]

    Khan, Shahbaz

    Land and Water has won global recognition for innovative sustainable irrigation systems research Irrigation Systems research team, based in Griffith, will play a part in the ranking and accreditation as globally. CSIRO's Sustainable Irrigation Systems research team is helping farming communities translate

  16. Towards a Critical Mass Model for Collective Irrigation Management

    E-Print Network [OSTI]

    Richner, Heinz

    . Introduction Irrigation and water supply systems are of vital importance for agriculture in many regions, it has not been applied explicitly to irrigation man- agement in a dynamic way. System dynamics claims/downstream interactions in collective irrigation systems. The rationale of the critical mass model and a formal model

  17. Technical descriptions of ten irrigation technologies for conserving energy

    SciTech Connect (OSTI)

    Harrer, B.J.; Wilfert, G.L.

    1983-05-01T23:59:59.000Z

    Technical description of ten technologies which were researched to save energy in irrigated agriculture are presented. These technologies are: well design and development ground water supply system optimization, column and pump redesign, variable-speed pumping, pipe network optimization, reduced-pressure center-pivot systems, low-energy precision application, automated gated-pipe system, computerized irrigation scheduling, and instrumented irrigation scheduling. (MHR)

  18. HybriDrive Propulsion System Cleaner, smarter power for transit

    E-Print Network [OSTI]

    to Full Commercialization of Fuel Cell Buses #12;Well-to-Wheels Efficiency 6 · Battery EV is best at 40 Vehicle Energy Storage System (ESS) Storage and Extraction 0.95 * 0.95 = 0.9R-4 Bffng 10.7% Bffc 5.9% Bze (H2) and Compression 0.65 * 0.9 = 0.59R-6 H2 Transportation and Storage 0.9R-7 H2 Delivery to Vehicle

  19. Evaluation of the 2007 Toyota Camry Hybrid Syneregy Drive System

    SciTech Connect (OSTI)

    Burress, T.A.; Coomer, C.L.; Campbell, S.L.; Seiber, L.E.; Marlino, L.D.; Staunton, R.H.; Cunningham, J.P.

    2008-04-15T23:59:59.000Z

    The U.S. Department of Energy (DOE) and American automotive manufacturers General Motors, Ford, and DaimlerChrysler began a five-year, cost-shared partnership in 1993. Currently, hybrid electric vehicle (HEV) research and development is conducted by DOE through its FreedomCAR and Vehicle Technologies (FCVT) program. The mission of the FCVT program is to develop more energy efficient and environmentally friendly highway transportation technologies. Program activities include research, development, demonstration, testing, technology validation, and technology transfer. These activities are aimed at developing technologies that can be domestically produced in a clean and cost-competitive manner. Under the FCVT program, support is provided through a three-phase approach [1] which is intended to: • Identify overall propulsion and vehicle-related needs by analyzing programmatic goals and reviewing industry’s recommendations and requirements, then develop the appropriate technical targets for systems, subsystems, and component research and development activities; • Develop and validate individual subsystems and components, including electric motors, emission control devices, battery systems, power electronics, accessories, and devices to reduce parasitic losses; and • Determine how well the components and subassemblies work together in a vehicle environment or as a complete propulsion system and whether the efficiency and performance targets at the vehicle level have been achieved. The research performed in this area will help remove technical and cost barriers to enable technology for use in such advanced vehicles as hybrid electric, plug-in hybrid electric, electric, and fuel-cell-powered vehicles.

  20. ENHANCED RECOVERY UTILIZING VARIABLE FREQUENCY DRIVES AND A DISTRIBUTED POWER SYSTEM TECHNICAL PROGRESS REPORT

    SciTech Connect (OSTI)

    Randy Peden; Sanjiv Shah

    2004-02-11T23:59:59.000Z

    This report describes the progress made during first six months of the project entitled ''Enhanced Recovery Utilizing Variable Frequency Drives and a Distributed Power System''. During this period, project plan, demonstration plan and project schedule were developed, equipment was ordered and baseline data was collected.

  1. daho has approximately 4 million acres of irrigated agricultural land. Most of it is in pas-

    E-Print Network [OSTI]

    O'Laughlin, Jay

    (59 percent) or surface irrigation systems (40 percent), with only a very small amount (less than 1 percent) in micro-irrigation systems (trickle or drip) (table 2). The selection of an irrigation system. In a ideal irrigation system, on a field with uniform soil properties, water is supplied uni- formly over

  2. Integrated Direct/Indirect Adaptive Robust Precision Control of Linear Motor Drive Systems with Accurate Parameter Estimates

    E-Print Network [OSTI]

    Yao, Bin

    Integrated Direct/Indirect Adaptive Robust Precision Control of Linear Motor Drive Systems The focus of the paper is on the synthesis of nonlinear adaptive robust controllers for precision linear control of linear motor drive systems but with an improved estimation model, in which accurate parameter

  3. Engine having hydraulic and fan drive systems using a single high pressure pump

    DOE Patents [OSTI]

    Bartley, Bradley E. (Manito, IL); Blass, James R. (Bloomington, IL); Gibson, Dennis H. (Chillicothe, IL)

    2000-01-01T23:59:59.000Z

    An engine comprises a hydraulic system attached to an engine housing that includes a high pressure pump and a hydraulic fluid flowing through at least one passageway. A fan drive system is also attached to the engine housing and includes a hydraulic motor and a fan which can move air over the engine. The hydraulic motor includes an inlet fluidly connected to the at least one passageway.

  4. Flatness-based control of an irrigation canal using SCADA

    E-Print Network [OSTI]

    -time irrigation operations using a supervision, control, and data acquisition (SCADA) system with automatic centralized controller. Irrigation canals can be viewed and modeled as delay systems since it takes timeFlatness-based control of an irrigation canal using SCADA Tarek Rabbani, Simon Munier, David

  5. Linking Texas irrigation: Consortium communicates research, education projects

    E-Print Network [OSTI]

    Supercinski, Danielle

    2008-01-01T23:59:59.000Z

    on the development and implementation of irrigation systems and practices in Texas, yet few efforts have been made to coordinate ongoing programs and results. With the formation of the Consortium for Irrigation Research and Education (CIRE) in 2007... research plots, and center pivot and drip irrigation systems at the Texas AgriLife Research and Extension Center at Uvalde. These plots are part of the Precision Irrigators Network project funded by Texas Water Development Board and the Rio Grande Basin...

  6. Spatial Variability Considerations in Interpreting Soil Moisture Measurements for Irrigation Scheduling

    E-Print Network [OSTI]

    O'Laughlin, Jay

    . Irrigation uniformity describes how evenly the irrigation system distributes water over the agricultural is available in University of Idaho Cooperative Extension System Bulletin 824, "Irrigation Uniformity crop water requirements to be estimated in advance. Most irrigation systems are incapable of "catching

  7. Reducing Turfgrass Water Consumption using Sensor Nodes and an Adaptive Irrigation Controller

    E-Print Network [OSTI]

    Lawrence, Ramon

    sensor and irrigation control system that reduces water consumption for residential turfgrass irrigation. It has been estimated that 50- 75% of residential water use is for irrigation. Current systems are exceptionally poor at adapting irrigation to meet demand, pri- marily due to incomplete information for system

  8. M. Porkolab, FESAC Greenwald Sub-panel Meeting, PPPLAug7, 2007 RF Heating and Current Drive Systems

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    M. Porkolab, FESAC Greenwald Sub-panel Meeting, PPPLAug7, 2007 RF Heating and Current Drive Systems;M. Porkolab, FESAC Greenwald Sub-panel Meeting, PPPLAug7, 2007 Lower Hybrid Heating and Current Greenwald Sub-panel Meeting, PPPLAug7, 2007 Aspects of ICRF Heating and Current Drive · ICRF power

  9. A Design Model for Subsurface Drip Irrigation in Arizona

    E-Print Network [OSTI]

    Fay, Noah

    and useful tool when applied to the design of subsurface irrigation systems #12;Acknowledgements This projectA Design Model for Subsurface Drip Irrigation in Arizona Michael Liga Advisor: Dr. Don Slack Biosystems Engineering University of Arizona #12;Water Issue Subsurface Drip Irrigation · Benefits ·Increased

  10. An Overview of the Operational Characteristics of Selected Irrigation Districts in the Texas Lower Rio Grande Valley: Brownsville Irrigation District

    E-Print Network [OSTI]

    Stubbs, Megan J.; Rister, M. Edward; Sturdivant, Allen W.; Lacewell, Ronald D.

    TR-274 August 2004 An Overview of the Operational Characteristics of Selected Irrigation Districts in the Texas Lower Rio Grande Valley: Brownsville Irrigation District Megan J. Stubbs M. Edward Rister Allen W... Grande Valley: Brownsville Irrigation District Megan J. Stubbs M. Edward Rister Allen W. Sturdivant Ronald D. Lacewell Texas Water Resources Institute Texas A&M University System This research was financially supported...

  11. Modesto Irrigation District- Photovoltaic Rebate Program

    Broader source: Energy.gov [DOE]

    Modesto Irrigation District offers a photovoltaic rebate program for all of their electric customers. The peak output capacity of a system must be 1 kW or greater to participate. Systems up to 30...

  12. Supplement to Diagnosis and Management of Salinity Problems in Irrigated Pecan Production: Salt Leaching

    E-Print Network [OSTI]

    Miyamoto, S.

    (e. g., Hanson and Bendixen, 1995). The flow under drip irrigation is largely unsaturated flow, and the evaporation-driven salinity increase associated with high frequency sprinkler irrigation is minimal with drip systems. This method... of leaching irrigation depend largely upon the existing irrigation system, and the types of soils involved. Several items, however, should be kept in mind. We already mentioned that it is preferable to apply leaching irrigation during the dormant period...

  13. A Novel MagPipe Pipeline transportation system using linear motor drives

    SciTech Connect (OSTI)

    Fang, J.R.; Montgomery, D.B.; Roderick, L. [Magplane Technology Inc., Littleton, MA (United States)

    2009-11-15T23:59:59.000Z

    A novel capsule pipeline transportation system using linear motor drives, called Magplane MagPipe, is under development with the intention to replace trucks and railways for hauling materials from the mine to the rail head, power plant, or processing plant with reduced operating cost and energy consumption. The initial demonstration of a MagPipe line in Inner Mongolia will be a 500-m-long double-pipe coal transport system with the design transportation capacity of 3 Mega-Mg per year. The pipeline consists of 6-m-long plastic pipe modules with an I-beam suspension system inside the pipe to carry sets of five coupled capsules. The pipe will also contain noncontinuous motor winding modules spaced at 50-m intervals. A set of Halbach-arrayed permanent magnets on the bottom of the capsules interact with the linear motor windings to provide propulsion. The motor is driven by variable frequency drives outside the pipe to control the speed. This paper briefly describes the overall MagPipe pipeline transportation system, including the preliminary conclusions of the linear synchronous motor analysis.

  14. Apparatus and method for reducing inductive coupling between levitation and drive coils within a magnetic propulsion system

    DOE Patents [OSTI]

    Post, Richard F. (Walnut Creek, CA)

    2001-01-01T23:59:59.000Z

    An apparatus and method is disclosed for reducing inductive coupling between levitation and drive coils within a magnetic levitation system. A pole array has a magnetic field. A levitation coil is positioned so that in response to motion of the magnetic field of the pole array a current is induced in the levitation coil. A first drive coil having a magnetic field coupled to drive the pole array also has a magnetic flux which induces a parasitic current in the levitation coil. A second drive coil having a magnetic field is positioned to attenuate the parasitic current in the levitation coil by canceling the magnetic flux of the first drive coil which induces the parasitic current. Steps in the method include generating a magnetic field with a pole array for levitating an object; inducing current in a levitation coil in response to motion of the magnetic field of the pole array; generating a magnetic field with a first drive coil for propelling the object; and generating a magnetic field with a second drive coil for attenuating effects of the magnetic field of the first drive coil on the current in the levitation coil.

  15. Merced Irrigation District- PV Buydown Program

    Broader source: Energy.gov [DOE]

    Merced Irrigation District (MID) offers its residential, commercial and non-profit customers a rebate for installing solar electric photovoltaic (PV) systems on their homes and offices. The rebate...

  16. An Integrated Flywheel Energy Storage System with a Homopolar Inductor Motor/Generator and High-Frequency Drive

    E-Print Network [OSTI]

    Sanders, Seth

    An Integrated Flywheel Energy Storage System with a Homopolar Inductor Motor/Generator and High Flywheel Energy Storage System with a Homopolar Inductor Motor/Generator and High-Frequency Drive Copyright 2003 by Perry I-Pei Tsao #12;1 Abstract An Integrated Flywheel Energy Storage System with a Homopolar

  17. Comprehensive Irrigation Management

    E-Print Network [OSTI]

    Cook, K.

    2011-01-01T23:59:59.000Z

    The other irrigation ? Optimizing water consumption in urban landscapes Kenneth Cook President, Intelligent Irrigation Banyan Water Water risk ? increasing rapidly in the US 2 Sustainable property management 3 ? ?Green? ? Audubon Cert..., COO ? Improve efficiencies and use in urban landscapes ? Make efficiency changes in the landscape early on ? too important for all stakeholders to get to point of no water availability for irrigation ? Real estate values affected by as much...

  18. Columbia Rural Electric Association- Irrigation Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Columbia REA, through the Bonneville Power Administration, offers an irrigation energy efficiency program for its agricultural customers. Stationary systems are not eligible for this program due to...

  19. Best Management Practice #5: Water-Efficient Irrigation

    Broader source: Energy.gov [DOE]

    Water efficiency must be considered from the initial irrigation system design phase through installation to ensure optimal performance. Consistent management and maintenance is also essential.

  20. Linear motor drive system for continuous-path closed-loop position control of an object

    DOE Patents [OSTI]

    Barkman, William E. (Oak Ridge, TN)

    1980-01-01T23:59:59.000Z

    A precision numerical controlled servo-positioning system is provided for continuous closed-loop position control of a machine slide or platform driven by a linear-induction motor. The system utilizes filtered velocity feedback to provide system stability required to operate with a system gain of 100 inches/minute/0.001 inch of following error. The filtered velocity feedback signal is derived from the position output signals of a laser interferometer utilized to monitor the movement of the slide. Air-bearing slides mounted to a stable support are utilized to minimize friction and small irregularities in the slideway which would tend to introduce positioning errors. A microprocessor is programmed to read command and feedback information and converts this information into the system following error signal. This error signal is summed with the negative filtered velocity feedback signal at the input of a servo amplifier whose output serves as the drive power signal to the linear motor position control coil.

  1. Aging mechanisms in the Westinghouse PWR (Pressurized Water Reactor) Control Rod Drive system

    SciTech Connect (OSTI)

    Gunther, W.; Sullivan, K.

    1991-01-01T23:59:59.000Z

    An aging assessment of the Westinghouse Pressurized Water Reactor (PWR) Control Rod System (CRD) has been completed as part of the US NRC's Nuclear Plant Aging Research, (NPAR) Program. This study examined the design, construction, maintenance, and operation of the system to determine its potential for degradation as the plant ages. Selected results from this study are presented in this paper. The operating experience data were evaluated to identify the predominant failure modes, causes, and effects. From our evaluation of the data, coupled with an assessment of the materials of construction and the operating environment, we conclude that the Westinghouse CRD system is subject to degradation which, if unchecked, could affect its safety function as a plant ages. Ways to detect and mitigate the effects of aging are included in this paper. The current maintenance for the control rod drive system at fifteen Westinghouse PWRs was obtained through a survey conducted in cooperation with EPRI and NUMARC. The results of the survey indicate that some plants have modified the system, replaced components, or expanded preventive maintenance. Several of these activities have effectively addressed the aging issue. 2 refs., 2 figs., 2 tabs.

  2. Evaluation of 2004 Toyota Prius Hybrid Electric Drive System Interim Report

    SciTech Connect (OSTI)

    Ayers, C.W.

    2004-11-23T23:59:59.000Z

    Laboratory tests were conducted to evaluate the electrical and mechanical performance of the 2004 Toyota Prius and its hybrid electric drive system. As a hybrid vehicle, the 2004 Prius uses both a gasoline-powered internal combustion engine and a battery-powered electric motor as motive power sources. Innovative algorithms for combining these two power sources results in improved fuel efficiency and reduced emissions compared to traditional automobiles. Initial objectives of the laboratory tests were to measure motor and generator back-electromotive force (emf) voltages and determine gearbox-related power losses over a specified range of shaft speeds and lubricating oil temperatures. Follow-on work will involve additional performance testing of the motor, generator, and inverter. Information contained in this interim report summarizes the test results obtained to date, describes preliminary conclusions and findings, and identifies additional areas for further study.

  3. EA-1851: Delphi Automotive Systems Electric Drive Vehicle Battery and Component Manufacturing Initiative

    Broader source: Energy.gov [DOE]

    This EA evaluates the environmental impacts of a proposal to provide a financial assistance grant under the American Recovery and Reinvestment Act of 2009 (ARRA) to Delphi Automotive Systems, Limited Liability Corporation (LLC) (Delphi). Delphi proposes to construct a laboratory referred to as the “Delphi Kokomo, IN Corporate Technology Center” (Delphi CTC Project) and retrofit a manufacturing facility. The project would advance DOE’s Vehicle Technology Program through manufacturing and testing of electric-drive vehicle components as well as assist in the nation’s economic recovery by creating manufacturing jobs in the United States. The Delphi CTC Project would involve the construction and operation of a 10,700 square foot (ft2) utilities building containing boilers and heaters and a 70,000 ft2 engineering laboratory, as well as site improvements (roads, parking, buildings, landscaping,and lighting).

  4. An Overview of Operational Characteristics of Selected Irrigation Districts in the Texas Lower Rio Grande Valley: Hidalgo County Irrigation District No. 2 (San Juan)

    E-Print Network [OSTI]

    Stubbs, Megan J.; Rister, M. Edward; Sturdivant, Allen W.; Lacewell, Ronald D.

    to both urban communities and agriculture (which includes most of the irrigation districts in the Lower Rio Grande Valley) brings forth more questions related to how each of these systems operate. Individual or groupings of irrigation districts..., infrastructure, adoptive rate of technology, etc. can vary significantly across irrigation districts. So, to completely understand and appreciate the collective Lower Rio Grande Valley irrigation district system, one must understand the idiosyncrasies...

  5. 3rd Quarter 2010 | 25(3) THE EFFECT OF IRRIGATION TECHNOLOGY ON GROUNDWATER USE

    E-Print Network [OSTI]

    Lin, C.-Y. Cynthia

    pivot irrigation systems to "dropped nozzle" or "low energy precision application (LEPA)" center pivot irrigation systems has occurred in western Kansas in recent years. The shift was aided by policies that subsidized the installation of more efficient irrigation systems in an effort to reduce the extraction

  6. September 23, 2009 Engineer: Aggie Irrigation Catch Can best in the world

    E-Print Network [OSTI]

    the accuracy of tests to measure the efficiency and application rates of irrigation systems," said Dr. Guy is simple, Fipps said. One simply puts out containers and runs the irrigation system for a specified amount by properly calibrating their systems, Fipps said. Also, reducing over-irrigation is vital to preserving

  7. UNL Extension Continues Helping Farmers Learn Irrigation Strategies to use Less Water

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    water. Thus, over the years, a large portion of the area has had irrigation systems developed. Today. Some of the sites were equipped with line-source sprinkler systems to demonstrate irrigation strategies occurred during the pollination and grain filling stages. #12;A line-source irrigation system is a set

  8. Evaluation of 2004 Toyota Prius Hybrid Electic Drive System Interim Report - Revised

    SciTech Connect (OSTI)

    Ayers, C.W.; Hsu, J.S.; Marlino, L.D.; Miller, C.W.; Ott, G.W., Jr.; Oland, C.B.; Burress, T.A.

    2007-07-31T23:59:59.000Z

    The 2004 Toyota Prius is a hybrid automobile equipped with a gasoline engine and a battery-powered electric motor. Both of these motive power sources are capable of providing mechanical drive power for the vehicle. The engine can deliver a peak power output of 57 kilowatts (kW) at 5000 revolutions per minute (rpm) while the motor can deliver a peak power output of 50 kW at 1300 rpm. Together, this engine-motor combination has a specified peak power output of 82 kW at a vehicle speed of 85 kilometers per hour (km/h). In operation, the 2004 Prius exhibits superior fuel economy compared to conventionally powered automobiles. Laboratory tests were conducted to evaluate the electrical and mechanical performance of the 2004 Toyota Prius and its hybrid electric drive system. As a hybrid vehicle, the 2004 Prius uses both a gasoline-powered internal combustion engine and a battery-powered electric motor as motive power sources. Innovative algorithms for combining these two power sources results in improved fuel efficiency and reduced emissions compared to traditional automobiles. Initial objectives of the laboratory tests were to measure motor and generator back-electromotive force (emf) voltages and determine gearbox-related power losses over a specified range of shaft speeds and lubricating oil temperatures. Follow-on work will involve additional performance testing of the motor, generator, and inverter. Information contained in this interim report summarizes the test results obtained to date, describes preliminary conclusions and findings, and identifies additional areas for further study.

  9. JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING / SEPTEMBER/OCTOBER 2001 / 287 DESIGN OF MINIMUM SEEPAGE LOSS CANAL SECTIONS WITH

    E-Print Network [OSTI]

    Chahar, B. R.

    conveyance systems for deliv- ering water for irrigation. The seepage loss from irrigation canals constitutesJOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING / SEPTEMBER/OCTOBER 2001 / 287 DESIGN OF MINIMUM other factors [International Commission on Irrigation and Drainage (ICID) (1967)]. Analytical solutions

  10. Robust Generator System Using PM Assisted Synchronous Reluctance Generator with Current-fed Drive

    E-Print Network [OSTI]

    Baek, Jeihoon

    2011-02-22T23:59:59.000Z

    action by making the PMa-SynRG operates as a generator, rectifying the phase voltages by means of the three-phase rectifier and feeding the power into the load. These features make the current-fed drive a good candidate for driving any type of synchronous...

  11. CRADIT FARM DRIVE CREEK DRIVE

    E-Print Network [OSTI]

    Davis, H. Floyd

    CRADIT FARM DRIVE THURSTON CREEK DRIVE CENTRALAVENUE ENUE UNIVERSITY AVENUE EASTAVENUE FOREST HOME CREEK DRIVE CENTRALAVENUE ENUE UNIVERSITY AVENUE EASTAVENUE FOREST HOME DRIVE HIGHLAND ROBERTS PLACE GARDEN DEANS ARTS QUAD RAWLINGS GREEN R. URIS GARDEN AG QUAD BIOLOGY BEEBE LAK FALL CREEK Clark Hall Olin

  12. Control system to reduce the effects of friction in drive trains of continuous-path-positioning systems. [Patent application

    DOE Patents [OSTI]

    Green, W.L.

    1980-12-01T23:59:59.000Z

    An improved continuous-path-positioning servo-control system is provided for reducing the effects of friction arising at very low cutting speeds in the drive trains of numerically controlled cutting machines, and the like. The improvement comprises a feed forward network for altering the gain of the servo-control loop at low positioning velocities to prevent stick-slip movement of the cutting tool holder being positioned by the control system. The feed forward network shunts conventional lag-compensators in the control loop, or loops, so that the error signal used for positioning varies linearly when the value is small, but being limited for larger values. Thus, at higher positioning speeds there is little effect of the added component upon the control being achieved.

  13. Department of Mechanical Engineering Spring 2010 Kenya Water Well Drill Rig Redesign of Engine Drive Train System & Support Tower

    E-Print Network [OSTI]

    Demirel, Melik C.

    PENNSTATE Department of Mechanical Engineering Spring 2010 Kenya Water Well Drill Rig ­ Redesign the engine drive train system and support structure for a water drill rig to be used in Kenya. The original not replicable in Kenya. The original support structure also had design flaws as it failed during operation

  14. Traction Drive System for Electric Vehicles, Using Multilevel Converters Juan W. Dixon, Micah Ortzar and Felipe Ros

    E-Print Network [OSTI]

    Catholic University of Chile (Universidad Católica de Chile)

    Traction Drive System for Electric Vehicles, Using Multilevel Converters Juan W. Dixon, Micah converters for electric vehicles using multilevel inverters. They are being compared with inverters using vehicles. On the other hand, the PWM techniques used today to control modern static converters for electric

  15. The lower hybrid (LH) heating and current drive system can generate 10-12 MW of microwave power

    E-Print Network [OSTI]

    Background The lower hybrid (LH) heating and current drive system can generate 10-12 MW reflecting optics · Remote vacuum window manufactured by CCFE · Industrial contract for periscope manufacture with Zemax model · Remote, IR compatible, double vacuum window with pumped interspace · 4, two colour

  16. Idaho Power- Irrigation Efficiency Rewards Rebate Program

    Broader source: Energy.gov [DOE]

    Through Idaho Power's Irrigation Efficiency Rewards program, agricultural irrigation customers qualify to receive an incentive for a portion of the cost to install a new, more efficient irrigation...

  17. Introduction Irrigation is required for profitable commercial potato production in Idaho.

    E-Print Network [OSTI]

    O'Laughlin, Jay

    capacities. These conditions necessitate that reliable irrigation systems capable of light, frequent, uniform holding capacity, and (iii) a water supply and irrigation system that is capable of providing the needed1 Introduction Irrigation is required for profitable commercial potato production in Idaho. Maximum

  18. Increasing Water Use Efficiency Through Improved Orifice Design and Operational Procedures for Subirrigation Systems

    E-Print Network [OSTI]

    Wilke, O. C.; Hiler, E. A.

    systems were proposed. Drip irrigation lines successfully trailed a center-pivot irrigation system. Also a tractor-mounted implement was developed for moving individual drip irrigation laterals....

  19. Controllable optical output fields from an optomechanical system with a mechanical driving

    E-Print Network [OSTI]

    Xu, Xun-Wei

    2015-01-01T23:59:59.000Z

    We investigate the properties of the optical output fields from a cavity optomechanical system, where the cavity is driven by a strong coupling and a weak probe optical fields and the mechanical resonator is driven by a coherent mechanical pump. When the frequency of the mechanical pump matches the frequency difference between the coupling and probe optical fields, due to the interference between the different optical components at the same frequency, we demonstrate that the large positive or negative group delay of the output field at the frequency of probe field can be achieved and tuned by adjusting the phase and amplitude of the mechanical driving field. Moreover, the strength of the output field at the frequency of optical four-wave-mixing (FWM) field also can be controlled (enhanced and suppressed) by tuning the phase and amplitude of the mechanical pump. We show that the power of the output field at the frequency of the optical FWM field can be suppressed to zero or enhanced so much that it can be comp...

  20. Vehicle Technologies Office Merit Review 2015: Traction Drive Systems with Integrated Wireless Charging

    Broader source: Energy.gov [DOE]

    Presentation given by Oak Ridge National Laboratory at 2015 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about traction drive...

  1. Research grants (For periods including 2004) Dynamic intra-seasonal irrigation management under water scarcity, water quality, irrigation

    E-Print Network [OSTI]

    Prigozhin, Leonid

    Research grants (For periods including 2004) Dynamic intra-seasonal irrigation management under water scarcity, water quality, irrigation technology and environmental constraints. Y. Tsur, U. Shani, D Remote Sensing Methods and Geographic Information Systems A. Karnieli Grantor: US-AID Duration: 2004

  2. Sustainable Water Practices at Pomona's Parks: Improving Irrigation Use and Stormwater Runoff Retention

    E-Print Network [OSTI]

    Young, Terence

    utilized as irrigation for these locations, it is critical to retrofit existing systems and implement newSustainable Water Practices at Pomona's Parks: Improving Irrigation Use and Stormwater Runoff be leading the way towards a sustainable future. However, this is not the case. Landscape irrigation

  3. Using Midday Stem Water Potential to Assess Irrigation Needs of Landscape

    E-Print Network [OSTI]

    Standiford, Richard B.

    systems, while avoiding the potential for root disease development due to over- irrigation. IntroductionUsing Midday Stem Water Potential to Assess Irrigation Needs of Landscape Valley Oaks1 Ken Shackel2 related to both irrigation regime and tree physiological responses to stress. A standard pressure chamber

  4. Power factor correction of an electrical drive system based on multiphase machines

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    both in wind energy conversion or motor drive applications. A power factor (PF) control scheme is to maintain the PF of the power-winding, of the double star induction machine, in vicinity of unity whatever signify a machine with more than three phases in the stator side. So, the number of phases can be used

  5. THERMODYNAMIC DRIVING FORCES AND EQUILIBRIUM IN MULTICOMPONENT SYSTEMS WITH ANISOTROPIC SURFACES

    E-Print Network [OSTI]

    Taylor, Jean

    and surface motion are formulated for surfaces with anisotropic surface * *free energy. Weighted mean curvature is used in a way that reveals how the free energy of cu* *rved surfaces acts like a thermodynamic driving force and thus how it interacts with* * bulk free energies. The relations are valid

  6. Irrigation Water Quality

    E-Print Network [OSTI]

    McFarland, Mark L.; Lemon, Robert G.; Stichler, Charles

    2002-04-11T23:59:59.000Z

    Irrigation water quality is determined by the total amounts of salts and the types of salts the water contains. In this publication you'll learn why well water can be salty, what problems salty water can cause, what tests should be done...

  7. The Pumpkin Creek Watershed Limited Irrigation and No-Till Demonstration Gary L. Stone, Gary W. Hergert, Dean Yonts, Jim Schild, Rex A. Nielson and James Margheim

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    in the Panhandle can fit into limited irrigation cropping systems in the Pumpkin Creek Watershed. The NPNRD allowsThe Pumpkin Creek Watershed Limited Irrigation and No-Till Demonstration Gary L. Stone, Gary W irrigation applies less water than is required to meet full evapotranspiration (ET) or irrigation demand

  8. Biosphere-atmosphere interactions over semi-arid regions : modeling the role of mineral aerosols and irrigation in the regional climate system

    E-Print Network [OSTI]

    Marcella, Marc Pace

    2013-01-01T23:59:59.000Z

    This dissertation describes the role of land surface processes in shaping semi-arid climates, namely those of Southwest Asia and Northwest Africa. The interactions between dust emissions, irrigation, and climate processes ...

  9. Anti-backlash drive systems for multi-degree freedom devices

    DOE Patents [OSTI]

    Lungwen Tsai; Sunlai Chang.

    1993-09-14T23:59:59.000Z

    A new and innovative concept is described for the control of backlash in gear-coupled transmission mechanisms. The concept utilizes redundant unidirectional drives to assure positive coupling of gear meshes at all times. Based on this concept, a methodology for the enumeration of admissible redundant-drive backlash-free robotic mechanisms has been established. Some typical two- and three-DOF mechanisms are disclosed. Furthermore, actuator torques have been derived as functions of either joint torques or end-effector dynamic performance requirements. A redundantly driven gear coupled transmission mechanism manipulator has a fail-safe advantage in that, except of the loss of backlash control, it can continue to function when one of its actuators fails. A two-DOF backlash-free arm has been reduced to practice to demonstrate the principle. 20 figures.

  10. Anti-backlash drive systems for multi-degree freedom devices

    DOE Patents [OSTI]

    Tsai, Lung-Wen (Potomac, MD); Chang, Sun-Lai (Hyattsville, MD)

    1993-01-01T23:59:59.000Z

    A new and innovative concept for the control of backlash in gear-coupled transmission mechanisms. The concept utilizes redundant unidirectional drives to assure positive coupling of gear meshes at all times. Based on this concept, a methodology for the enumeration of admissible redundant-drive backlash-free robotic mechanisms has been established. Some typical two- and three-DOF mechanisms are disclosed. Furthermore, actuator torques have been derived as functions of either joint torques or end-effector dynamic performance requirements. A redundantly driven gear coupled transmission mechanism manipulator has a fail-safe advantage in that, except of the loss of backlash control, it can continue to function when one of its actuators fails. A two-DOF backlash-free arm has been reduced to practice to demonstrate the principle.

  11. Evaluation of pre-packaged agricultural drip irrigation kits

    E-Print Network [OSTI]

    Huang, Shen, S.B. Massachusetts Institute of Technology

    2012-01-01T23:59:59.000Z

    The purpose of this thesis is to conduct user testing and performance evaluation of two different agricultural pre-packaged drip irrigation kit (PDIK) systems: Chapin Bucket Kit and International Design Enterprises (IDE) ...

  12. Irrigation Training Program (South Texas Edition)

    E-Print Network [OSTI]

    Porter, D.

    ) .............................................................26 Reference: Estimating Soil Moisture by Feel and Appearance (1619) ............................................................27 Irrigation Training Program Topic Page 3 Table of Contents Irrigation Technologies and Best Management Practices...

  13. 28 / JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING / JANUARY/FEBRUARY 2000 DESIGN OF MINIMUM SEEPAGE LOSS CANAL SECTIONS

    E-Print Network [OSTI]

    Chahar, B. R.

    . INTRODUCTION Canals continue to be major conveyance systems for deliv- ering water for irrigation28 / JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING / JANUARY/FEBRUARY 2000 DESIGN OF MINIMUM in the alluvial plains of India. But the seepage loss from irrigation canals constitutes a substantial percentage

  14. Method and system for determining the torque required to launch a vehicle having a hybrid drive-train

    DOE Patents [OSTI]

    Hughes, Douglas A.

    2006-04-04T23:59:59.000Z

    A method and system are provided for determining the torque required to launch a vehicle having a hybrid drive-train that includes at least two independently operable prime movers. The method includes the steps of determining the value of at least one control parameter indicative of a vehicle operating condition, determining the torque required to launch the vehicle from the at least one determined control parameter, comparing the torque available from the prime movers to the torque required to launch the vehicle, and controlling operation of the prime movers to launch the vehicle in response to the comparing step. The system of the present invention includes a control unit configured to perform the steps of the method outlined above.

  15. Efficient Irrigation for Water conservation in the Rio Grande Basin: 2010-2011 Progress and Accomplishments

    E-Print Network [OSTI]

    Kalisek, D.; Harris, B.L.; Runyan, C.; DeMouche, L.

    2011-06-21T23:59:59.000Z

    in irrigation. Use of GIS as a real-time decision support system for irrigation districts An online GIS application integrates pump flow, meter data, and water account information to support districts in their current water management and conservation... Water Use 08 Task 4 On-Farm Irrigation System Management 12 Task 5 Urban Water Conservation 16 Task 6 Environment, Ecology and Water Quality Protection 22 Task 7 Saline and Wastewater Management and Water Reuse 28 Task 8...

  16. Guidelines for Developing Soil and Water Management Programs: Irrigated Pecans

    E-Print Network [OSTI]

    Miyamoto, S.

    Guidelines for Developing Soil and Water Management Programs: Irrigated Pecans Agricultural Research and Extension Center at El Paso March 2002 Texas Agricultural Experiment Station The Texas A&M University System Texas Water Resources Institute... by soil and water testing and appraisal, and evaluation of soil improvement options. Finally, orchard management practices, such as soil and irrigation management, fertilization and weed control should be fine- tuned. The significance of each measure may...

  17. Using Virtual Business Systems to drive lean behavior in engineering design and support

    E-Print Network [OSTI]

    Ho, Purdy P. (Purdy Pinpin), 1977-

    2008-01-01T23:59:59.000Z

    Virtual Business System (VBS) is a visual-based analytics and real-time information displaying system. It first started at Raytheon's Andover manufacturing facility in early 2000 with the strategic objectives of linking ...

  18. A Sensor for Urban Driving Assistance Systems Based on Dense Stereovision

    E-Print Network [OSTI]

    Zhu, Zhigang

    to the passive safety systems, primitive active safety systems, such as airbags, are only useful when the crash (internal airbags for passenger protection, or inflatable hood for pedestrian protection). While warning may

  19. Dynamic system perspective for design : ility-driving elements as responses to uncertainty

    E-Print Network [OSTI]

    Ricci, Nicola, S.M. Massachusetts Institute of Technology

    2014-01-01T23:59:59.000Z

    This thesis is concerned with the design of complex artificial systems. For such systems, there is a growing need to deliver value to stakeholders beyond the initial functional requirements and to cope with rapidly changing ...

  20. High Precision Control of Indirect Drive Systems Based on End-effector Sensor Information

    E-Print Network [OSTI]

    Han, Cheng-Huei

    2009-01-01T23:59:59.000Z

    Optimal control theories such as linear quadratic control and ? control usually provide appropriate controller gains for a given system

  1. Drive reconfiguration mechanism for tracked robotic vehicle

    DOE Patents [OSTI]

    Willis, W. David (Idaho Falls, ID)

    2000-01-01T23:59:59.000Z

    Drive reconfiguration apparatus for changing the configuration of a drive unit with respect to a vehicle body may comprise a guide system associated with the vehicle body and the drive unit which allows the drive unit to rotate about a center of rotation that is located at about a point where the drive unit contacts the surface being traversed. An actuator mounted to the vehicle body and connected to the drive unit rotates the drive unit about the center of rotation between a first position and a second position.

  2. Solar Energy to Drive Absorption Cooling Systems Suitable for Small Building Applications 

    E-Print Network [OSTI]

    Gomri, R.

    2010-01-01T23:59:59.000Z

    results and an overview of the performance of low capacity single stage and half-effect absorption cooling systems, suitable for residential and small building applications. The primary heat source is solar energy supplied from flat plate collectors...

  3. Solar Energy to Drive Absorption Cooling Systems Suitable for Small Building Applications

    E-Print Network [OSTI]

    Gomri, R.

    2010-01-01T23:59:59.000Z

    results and an overview of the performance of low capacity single stage and half-effect absorption cooling systems, suitable for residential and small building applications. The primary heat source is solar energy supplied from flat plate collectors...

  4. An efficient drive, sensing, and actuation system using PZT stack actuator cells

    E-Print Network [OSTI]

    Barragán, Patrick R

    2012-01-01T23:59:59.000Z

    The PZT cellular actuator developed in the MIT d'Arbeloff Laboratory utilizes small-strain, high-force PZT stack actuators in a mechanical flexure system to produce a larger-strain, lower-force actuator useful in robotic ...

  5. Improving the Efficiency of Die Casting Machine Hydraulic Systems with the Retrofit of Adjustable Frequency Drives

    E-Print Network [OSTI]

    Ambs, L.; Kosanovic, D.; Edberg, C.

    casting machine, DCM, consists of basically four fundamental systems. These are the casting mold or die, the clamping unit, the injection unit, and the hydraulic system. Die casting molds perfonn two crucial functions; imparting the desired shape..., speeding the solidification process. The clamping unit is responsible for opening and closing the mold halves, as well as exerting the force that holds the two halves of the mold together during injection. Most die casting machines use a type...

  6. Driving Low-Power Wearable Systems with an Adaptively-Controlled Foot-Strike Scavenging Platform

    E-Print Network [OSTI]

    Potkonjak, Miodrag

    as a means to scavenge energy from foot-strikes and power wearable systems. While they exhibit large energy densities, DEs must be closely controlled to maximize the energy they transduce. Towards this end, we propose a DE micro-generator array configuration that enhances transduc- tion efficiency, and the use

  7. Low speed control of a DC motor driving a mechanical system with fuzzy adaptive compensation

    E-Print Network [OSTI]

    Hyun, Dongyoon

    1997-01-01T23:59:59.000Z

    and lubricated sliding junctions. For experiments, an IBM PC, a DSPACE DSP board, SE uLM and Real Time Workshop are used. All three control systems can achieve such a very low sustainable speed as 0.005 rad/sec without stick-slip oscillations, which appear when...

  8. 2002-21-0041 Performance Driver Information Systems, Enhancing the Fun-to-Drive Equation

    E-Print Network [OSTI]

    in automobiles today display vehicle speed, fluid levels, fluid temperatures, and some basic diagnostic information (warnings, panel lamps). Optional driver information systems add to this list by offering fuel to be very complex. Essentially, all that is required is a speedometer and a fuel gauge. The speedometer

  9. On-Farm Irrigation PUBLICATION Irrigation Pumping Plants Water Management Handbook Series

    E-Print Network [OSTI]

    Publication Number

    About this publication: Irrigation Pumping Plants is the fourth in a series of water management handbooks developed by the University of California Irrigation Program. Funding for this project

  10. Hybrid Braking System for Non-Drive Axles | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet), GeothermalGridHYDROGEND D e e pShade YourHybirdBraking System for

  11. Statistical Characterization of School Bus Drive Cycles Collected via Onboard Logging Systems

    SciTech Connect (OSTI)

    Duran, A.; Walkowicz, K.

    2013-10-01T23:59:59.000Z

    In an effort to characterize the dynamics typical of school bus operation, National Renewable Energy Laboratory (NREL) researchers set out to gather in-use duty cycle data from school bus fleets operating across the country. Employing a combination of Isaac Instruments GPS/CAN data loggers in conjunction with existing onboard telemetric systems resulted in the capture of operating information for more than 200 individual vehicles in three geographically unique domestic locations. In total, over 1,500 individual operational route shifts from Washington, New York, and Colorado were collected. Upon completing the collection of in-use field data using either NREL-installed data acquisition devices or existing onboard telemetry systems, large-scale duty-cycle statistical analyses were performed to examine underlying vehicle dynamics trends within the data and to explore vehicle operation variations between fleet locations. Based on the results of these analyses, high, low, and average vehicle dynamics requirements were determined, resulting in the selection of representative standard chassis dynamometer test cycles for each condition. In this paper, the methodology and accompanying results of the large-scale duty-cycle statistical analysis are presented, including graphical and tabular representations of a number of relationships between key duty-cycle metrics observed within the larger data set. In addition to presenting the results of this analysis, conclusions are drawn and presented regarding potential applications of advanced vehicle technology as it relates specifically to school buses.

  12. Improved Water and Nutrient Management Through HighFrequency Irrigation

    E-Print Network [OSTI]

    Howell, T. A.; Brown, K. W.; Newton, R. J.; Redden, D. L.; McFarland, M. J.

    High frequency irrigation implies the uniform, frequent application of water to crops. The fequency may range from several irrigations per week to daily irrigation to even several irrigations per day in greenhouse and nursery settings. Most...

  13. A Physically Based Coupled Model for Simulating 1D Surface -2D Subsurface Flow and Plant Water Uptake in Irrigation Furrows.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of modeling the water movement processes in irrigation systems. These empirical approaches can provide Uptake in Irrigation Furrows. II: Model Test and Evaluation Th. W¨ohling , J.C. Mailhol Abstract A physically based seasonal furrow irrigation model - FIM - was developed which comprises three mod- ules

  14. Traction Drive System Modeling

    Broader source: Energy.gov [DOE]

    2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

  15. Traction Drive Systems Breakout

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23,EnergyChicopeeTechnologyfact sheet summarizesof EnergyEnergyTraction

  16. Irrigation Training Program (North Texas edition)

    E-Print Network [OSTI]

    Porter, D.

    ) ..........................................................................................26 Reference: Irrigation Monitoring with Soil Water Sensors (B-6194) .............................................................27 Reference: Estimating Soil Moisture by Feel and Appearance (1619...

  17. Engineering AnteaterDrive

    E-Print Network [OSTI]

    Mease, Kenneth D.

    Rockw ell & M DEA Engineering Tower AnteaterDrive AnteaterDrive East Peltason Drive EastPeltasonDrive East Peltason Drive Anteater Parking Structure EngineeringServiceRoad Engineering Laboratory Facility Engineering Gateway Engineering Hall AIRB Calit2 Engineering Lecture Hall Campus Building Engineering Building

  18. CROP & SOIL SCIENCES Irrigation Specialist

    E-Print Network [OSTI]

    Arnold, Jonathan

    CROP & SOIL SCIENCES Irrigation Specialist Committee Membership Dr. John Beasley - committee chair Dr. Jared Whitaker Department of Crop & Soil Sciences Department of Crop & Soil Sciences University: (229) 386-7308 Fax: (912) 681-0376 Dr. Robert Carrow Dr. Mark Risse Department of Crop & Soil Sciences

  19. Air-Cooled Stack Freeze Tolerance Freeze Failure Modes and Freeze Tolerance Strategies for GenDriveTM Material Handling Application Systems and Stacks Final Scientific Report

    SciTech Connect (OSTI)

    Hancock, David, W.

    2012-02-14T23:59:59.000Z

    Air-cooled stack technology offers the potential for a simpler system architecture (versus liquid-cooled) for applications below 4 kilowatts. The combined cooling and cathode air allows for a reduction in part count and hence a lower cost solution. However, efficient heat rejection challenges escalate as power and ambient temperature increase. For applications in ambient temperatures below freezing, the air-cooled approach has additional challenges associated with not overcooling the fuel cell stack. The focus of this project was freeze tolerance while maintaining all other stack and system requirements. Through this project, Plug Power advanced the state of the art in technology for air-cooled PEM fuel cell stacks and related GenDrive material handling application fuel cell systems. This was accomplished through a collaborative work plan to improve freeze tolerance and mitigate freeze-thaw effect failure modes within innovative material handling equipment fuel cell systems designed for use in freezer forklift applications. Freeze tolerance remains an area where additional research and understanding can help fuel cells to become commercially viable. This project evaluated both stack level and system level solutions to improve fuel cell stack freeze tolerance. At this time, the most cost effective solutions are at the system level. The freeze mitigation strategies developed over the course of this project could be used to drive fuel cell commercialization. The fuel cell system studied in this project was Plug Power's commercially available GenDrive platform providing battery replacement for equipment in the material handling industry. The fuel cell stacks were Ballard's commercially available FCvelocity 9SSL (9SSL) liquid-cooled PEM fuel cell stack and FCvelocity 1020ACS (Mk1020) air-cooled PEM fuel cell stack.

  20. Viability of Small Wind Distributed Generation for Farmers Who Irrigate (Poster)

    SciTech Connect (OSTI)

    Meadows, B.; Forsyth, T.; Johnson, S.; Healow, D.

    2010-05-01T23:59:59.000Z

    About 14% of U.S. farms are irrigated, representing 55 million acres of irrigated land. Irrigation on these farms is a major energy user in the United States, accounting for one-third of water withdrawals and 137 billion gallons per day. More than half of the Irrigation systems use electric energy. Wind energy can be a good choice for meeting irrigation energy needs. Nine of the top 10 irrigation states (California, Texas, Idaho, Arkansas, Colorado, Nebraska, Arizona, Kansas, Washington, and Oregon) have good to excellent wind resources. Many rural areas have sufficient wind speeds to make wind an attractive alternative, and farms and ranches can often install a wind energy system without impacting their ability to plant crops and graze livestock. Additionally, the rising and uncertain future costs of diesel, natural gas, and even electricity increase the potential effectiveness for wind energy and its predictable and competitive cost. In general, wind-powered electric generation systems generate more energy in the winter months than in the summer months when most crops need the water. Therefore, those states that have a supportive net metering policy can dramatically impact the viability of an onsite wind turbine. This poster presentation highlights case studies that show favorable and unfavorable policies that impact the growth of small wind in this important sector and demonstrate how net metering policies affect the viability of distributed wind generation for farmers who irrigate.

  1. Salinity Control in Irrigation Agriculture.

    E-Print Network [OSTI]

    Lyerly, Paul J.; Longenecker, Donald E.

    1962-01-01T23:59:59.000Z

    streams and under- ground sources contain dissolved substances known chemically as salts. Ocean water contains approximately 3 percent salts, or 40 tons of salts per acre-foot of water. Waters used for irriga- tion generally contain .1 to 5 tons... of salt per acre-foot of water. In general terms, salt is thought of as table alt; however, thousands of different salts are known. Examples of common salts in irrigation water are table salt (sodium chloride), Epsom salt (magnesium sulfate), gypsum...

  2. Irrigation Water Quality Salinity Management

    E-Print Network [OSTI]

    Small Potassium sulfate K2SO4 Small Sodium bicarbonate NaHCO3 Small Calcium carbonate CaCO3 Very Small concentration as related to the concentration of calcium and magnesium, and 3 Irrigation Water Quality Standards Na2SO4 Moderate to large Calcium chloride CaCl2 Moderate Calcium sulfate (gypsum) CaSO4 2H2O Moderate

  3. Electric-drive tractability indicator integrated in hybrid electric vehicle tachometer

    SciTech Connect (OSTI)

    Tamai, Goro; Zhou, Jing; Weslati, Feisel

    2014-09-02T23:59:59.000Z

    An indicator, system and method of indicating electric drive usability in a hybrid electric vehicle. A tachometer is used that includes a display having an all-electric drive portion and a hybrid drive portion. The all-electric drive portion and the hybrid drive portion share a first boundary which indicates a minimum electric drive usability and a beginning of hybrid drive operation of the vehicle. The indicated level of electric drive usability is derived from at least one of a percent battery discharge, a percent maximum torque provided by the electric drive, and a percent electric drive to hybrid drive operating cost for the hybrid electric vehicle.

  4. Water use, economic value of irrigated agriculture examined in new report

    E-Print Network [OSTI]

    Kalisek, Danielle

    2013-01-01T23:59:59.000Z

    Winter 2013 tx H2O 23 ] Story by Danielle Kalisek Agricultural irrigation systems continue to gain efficiency, experts say. Photo by Kay Ledbetter, Texas A&M AgriLife Communications. WATER USE, ECONOMIC VALUE OF IRRIGATED AGRICULTURE... EXAMINED IN NEW REPORT In #18;#25;#25;#15;, statewide irrigated agriculture had a #17;#19;.#15; billion economic value, according to the Texas Water Development Board and Texas State Soil and Water Conservation Board. Texas A&M AgriLife Research...

  5. Irrigation, Navigation Flood Control and Recreation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Irrigation,-Navigation-Flood-Control-and-Recreation- Sign In About | Careers | Contact | Investors | bpa.gov Search News & Us Expand News & Us Projects & Initiatives Expand...

  6. DropBot: An open-source digital microfluidic control system with precise control of electrostatic driving force and instantaneous drop velocity measurement

    SciTech Connect (OSTI)

    Fobel, Ryan [Institute for Biomaterials and Biomedical Engineering, University of Toronto, 164 College St., Toronto, Ontario M5S 3G9 (Canada) [Institute for Biomaterials and Biomedical Engineering, University of Toronto, 164 College St., Toronto, Ontario M5S 3G9 (Canada); Donnelly Centre for Cellular and Biomolecular Research, 160 College St., Toronto, Ontario M5S 3E1 (Canada); Fobel, Christian [School of Computer Science, University of Guelph, 50 Stone Road East, Guelph, Ontario N1G 2W1 (Canada)] [School of Computer Science, University of Guelph, 50 Stone Road East, Guelph, Ontario N1G 2W1 (Canada); Wheeler, Aaron R. [Institute for Biomaterials and Biomedical Engineering, University of Toronto, 164 College St., Toronto, Ontario M5S 3G9 (Canada) [Institute for Biomaterials and Biomedical Engineering, University of Toronto, 164 College St., Toronto, Ontario M5S 3G9 (Canada); Donnelly Centre for Cellular and Biomolecular Research, 160 College St., Toronto, Ontario M5S 3E1 (Canada); Department of Chemistry, University of Toronto, 80 St. George St., Toronto, Ontario M5S 3H6 (Canada)

    2013-05-13T23:59:59.000Z

    We introduce DropBot: an open-source instrument for digital microfluidics (http://microfluidics.utoronto.ca/dropbot). DropBot features two key functionalities for digital microfluidics: (1) real-time monitoring of instantaneous drop velocity (which we propose is a proxy for resistive forces), and (2) application of constant electrostatic driving forces through compensation for amplifier-loading and device capacitance. We anticipate that this system will enhance insight into failure modes and lead to new strategies for improved device reliability, and will be useful for the growing number of users who are adopting digital microfluidics for automated, miniaturized laboratory operation.

  7. Modified Streamflows 1990 Level of Irrigation : Columbia River and Coastal Basins, 1928-1989.

    SciTech Connect (OSTI)

    United States. Bonneville Power Administration; A.G. Crook Company

    1993-04-01T23:59:59.000Z

    The annual operation plans described in the following sections require detailed system regulation computer model studies. These system regulation studies are necessary to evaluate potential new projects and to develop operational rule curves for the existing system of projects. The objective is to provide a basis for evaluating alternative system regulation scenarios. This provides essential input for optimizing the management of existing projects and planning future projects for the most beneficial use of the water supply and resources in the entire region. Historical streamflows per se are inadequate for system regulation studies because the pattern of observed flow has continually changed with each successive stage of irrigation and e development. The problem, therefore, is to adjust for past operation of storage projects and to determine the necessary adjustments that should be made to recorded flows to reflect current stages of irrigation development. Historical flows which have been adjusted to a common level of irrigation development by correcting for the effects of diversion demand, return flow, and change-of-contents and evaporation in upstream reservoirs and lakes are referred to as modified flows. This report describes the development of irrigation depletion adjustments and modified flows for the 1990 level of development for the 61-year period 1928--1989. incremental depletion adjustments were computed in this report for each month of the 61-year period to adjust the effects of actual irrigation in each year up to that which would have been experienced with the irrigation as practiced in 1990.

  8. Roberts Union DRIVING DIRECTIONS

    E-Print Network [OSTI]

    Wilson, Herb

    the pond onto Bixler Drive, across from the Millwright Steam Plant and just before the outdoor track (Washington Street). Take your first left onto Bixler Drive, after you pass the outdoor track and football

  9. Modeling the Effects of Groundwater-fed Irrigation on Terrestrial Hydrology over the Conterminous United States

    SciTech Connect (OSTI)

    Leng, Guoyong; Huang, Maoyi; Tang, Qiuhong; Gao, Huilin; Leung, Lai-Yung R.

    2014-06-01T23:59:59.000Z

    Human alteration of the land surface hydrologic cycle is substantial. Recent studies suggest that local water management practices including groundwater pumping and irrigation could significantly alter the quantity and distribution of water in the terrestrial system, with potential impacts on weather and climate through land-atmosphere feedbacks. In this study, we incorporated a groundwater withdrawal scheme into the Community Land Model version 4 (CLM4). To simulate the impact of irrigation realistically, we calibrated the CLM4 simulated irrigation amount against observations from agriculture census at the county scale over the conterminous United States (CONUS). The water used for irrigation was then removed from the surface runoff and groundwater aquifer according to a ratio determined from the county-level agricultural census data. Based on the simulations, the impact of groundwater withdrawals for irrigation on land surface and subsurface fluxes were investigated. Our results suggest that the impacts of irrigation on latent heat flux and potential recharge when water is withdrawn from surface water alone or from both surface and groundwater are comparable and local to the irrigation areas. However, when water is withdrawn from groundwater for irrigation, greater effects on the subsurface water balance were found, leading to significant depletion of groundwater storage in regions with low recharge rate and high groundwater exploitation rate. Our results underscore the importance of local hydrologic feedbacks in governing hydrologic response to anthropogenic change in CLM4 and the need to more realistically simulate the two-way interactions among surface water, groundwater, and atmosphere to better understand the impacts of groundwater pumping on irrigation efficiency and climate.

  10. Salinity Control in Irrigation Agriculture.

    E-Print Network [OSTI]

    Longenecker, Donald E.; Lyerly, Paul J.

    1957-01-01T23:59:59.000Z

    substances I chemically as salts. Ocean water contains rimately 3 percent salts, or 40 tons of salts .-foot of water. Waters used for irriga- ~erally contain .1 to 5 tons of salt per acre- water. . -er acrf +ion gen 'pot of ,.. ,enera1 terms, salt... and rock materials through which .he water must seep before becoming available inr irrigation. Mountain streams often contain less than one-tenth ton of salt per acre-foot of .rater. Drainage waters and ground waters in lesert valleys may contain...

  11. Water Loss Test Results: West Main Canal United Irrigation District of Hidalgo County

    E-Print Network [OSTI]

    Leigh, E.; Fipps, G.

    IRRIGATION TECHNOLOGY CENTER Texas Cooperative Extension ? Texas Agricultural Experiment Station Texas A&M University System 1 Extension Associate, and Professor and Extension Agricultural Engineer... Table 3. Data for Test UN1: West Main District: United Irrigation District of Hidalgo County Test ID: UN1 Canal: West Main Lining Type: Lined Starting Water Span Widths: SG1: 11.21 ft, SG3: 11.24 ft, SG5: 11.26 ft Date...

  12. Crop response at various stages of growth to sprinkler and furrow irrigation

    E-Print Network [OSTI]

    Bausch, Walter Charles

    1971-01-01T23:59:59.000Z

    OF LITERATURE Comparative Studies Of Irrigation Methods Research Performed With Peanuts Other Moisture Stress Studies TEST AREA, EQUIPMENT, AND PROCEDURE Test Area Equipment Irrigation Systems Sprinkler Furrow Meteorological Instrumentation Anemometer... and crop yields are controlled directly by plant water stress and only indirectly by soil water stress. Consequently, the only safe procedure to use for studies involving soil-plant-water relations is to measure the plant water stress. TEST AREA ~ EQUI...

  13. the 4th Power Electronics, Drive Systems & Technologies Conference, PEDSTC 2013 Simultaneous Sensing cum Actuating DC Motor

    E-Print Network [OSTI]

    Boyer, Edmond

    in this field have led to innovations in medical equipment, wind generation, aircraft systems, and numerous

  14. The neutral beam system for ITER is composed of two Heating and Current Drive (H&CD) injectors and

    E-Print Network [OSTI]

    incorporated into ITER's Product Lifecycle Management (PLM) system Figure 3: Illustration of design progress

  15. Advanced modeling ,control, and design of an electromechanical engine value drive system with a limited-angle actuator

    E-Print Network [OSTI]

    Qiu, Yihui, Ph. D. Massachusetts Institute of Technology

    2009-01-01T23:59:59.000Z

    This thesis addresses a specific variable valve actuation (VVA) system ---- an electromechanical valvetrain ---- in order to provide variable valve timing (VVT) in internal combustion (IC) engines. This electromechanical ...

  16. Irrigation Training Program For Texas Agricultural Producers 

    E-Print Network [OSTI]

    Harris, B.L.

    2010-01-01T23:59:59.000Z

    The Irrigation Training Program, funded by the Texas Water Development Board (TWDB) through an Agricultural Water Conservation Grant, began in 2006. Administered by the Texas Water Resources Institute (TWRI), the Texas State ...

  17. Evaluating Water Transfers in Irrigation Districts

    E-Print Network [OSTI]

    Ghimire, Narishwar

    2013-04-11T23:59:59.000Z

    The participation of irrigation districts (IDs) in surface water transfers from agriculture-to-municipal uses is studied by examining IDs’ economic and political behavior, comparing their performance with non-districts (non-IDs), and analyzing...

  18. Irrigation Monitoring with Soil Water Sensors 

    E-Print Network [OSTI]

    Enciso, Juan; Porter, Dana; Peries, Xavier

    2007-01-19T23:59:59.000Z

    Monitoring soil water content is essential if growers want to optimize production, conserve water, reduce environmental impacts and save money. This publication illustrates how soil moisture monitoring can improve irrigation decisions and how...

  19. El agua no se vende, el agua se defiende : water rights transfers and community irrigation in New Mexico's acequias

    E-Print Network [OSTI]

    Daly, Brian T. (Brian Thomas)

    2013-01-01T23:59:59.000Z

    Small farmers across New Mexico irrigate with acequias, a system of cooperative, gravity-fed ditches introduced in Spanish colonial times that remains well adapted to managing scarce water in a dry climate. While the acequia ...

  20. Consider Steam Turbine Drives for Rotating Equipment

    SciTech Connect (OSTI)

    Not Available

    2006-01-01T23:59:59.000Z

    This revised ITP tip sheet on steam turbine drives for rotating equipment provides how-to advice for improving the system using low-cost, proven practices and technologies.

  1. Piezoelectric drive circuit

    DOE Patents [OSTI]

    Treu, C.A. Jr.

    1999-08-31T23:59:59.000Z

    A piezoelectric motor drive circuit is provided which utilizes the piezoelectric elements as oscillators and a Meacham half-bridge approach to develop feedback from the motor ground circuit to produce a signal to drive amplifiers to power the motor. The circuit automatically compensates for shifts in harmonic frequency of the piezoelectric elements due to pressure and temperature changes. 7 figs.

  2. Piezoelectric drive circuit

    DOE Patents [OSTI]

    Treu, Jr., Charles A. (Raymore, MO)

    1999-08-31T23:59:59.000Z

    A piezoelectric motor drive circuit is provided which utilizes the piezoelectric elements as oscillators and a Meacham half-bridge approach to develop feedback from the motor ground circuit to produce a signal to drive amplifiers to power the motor. The circuit automatically compensates for shifts in harmonic frequency of the piezoelectric elements due to pressure and temperature changes.

  3. Frequency modulation drive for a piezoelectric motor

    DOE Patents [OSTI]

    Mittas, Anthony (Albuquerque, NM)

    2001-01-01T23:59:59.000Z

    A piezoelectric motor has peak performance at a specific frequency f.sub.1 that may vary over a range of frequencies. A drive system is disclosed for operating such a motor at peak performance without feedback. The drive system consists of the motor and an ac source connected to power the motor, the ac source repeatedly generating a frequency over a range from f.sub.1 -.DELTA.x to f.sub.1 +.DELTA.y.

  4. Parallel Scheduling for Cyber-Physical Systems: Analysis and Case Study on a Self-Driving Car

    E-Print Network [OSTI]

    Rajkumar, Ragunathan

    [31, 10, 26, 16, 30] is an appealing emerging CPS technology. In an autonomous car, motion planning-Physical Systems (CPS) rapidly increases, multi-core processors and parallel programming models such as OpenMP become appealing to CPS developers for guaranteeing timeliness. Hence, a par- allel task on multi

  5. US DRIVE Driving Research and Innovation for Vehicle Efficiency...

    Office of Environmental Management (EM)

    More Documents & Publications US DRIVE Fuel Pathway Integration Technical Team Roadmap Hydrogen Program Goal-Setting Methodologies Report to Congress US DRIVE Hydrogen...

  6. Does Doctrine Drive Technology or Does Technology Drive Doctrine?

    E-Print Network [OSTI]

    Blasko, Dennis

    2010-01-01T23:59:59.000Z

    Brief No. 4 September 2010 Does Doctrine Drive Technology orDoes Technology Drive Doctrine? Dennis Blasko Summary Wthat emphasizes strategy over technology and may hold some

  7. Ride and Drive Webinar

    Broader source: Energy.gov [DOE]

    Listen to this webinar and follow along using the slides below to learn how on-site plug-in electric vehicle (PEV) Ride and Drives can create value for your organization, your employees, and your...

  8. The Accident Externality from Driving

    E-Print Network [OSTI]

    Edlin, Aaron S.; Karaca-Mandic, Pinar

    2007-01-01T23:59:59.000Z

    Sex-Divided Mile- age, Accident, and Insurance Cost DataMandic. 2003. “The Accident Externality from Driving. ”Insurance Res. Council. accident externality from driving

  9. Direct drive wind turbine

    DOE Patents [OSTI]

    Bywaters, Garrett; Danforth, William; Bevington, Christopher; Jesse, Stowell; Costin, Daniel

    2006-10-10T23:59:59.000Z

    A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially inside the stator while minimizing the potential for contamination. The turbine further includes a means for mounting a transformer below the nacelle within the tower.

  10. Direct drive wind turbine

    DOE Patents [OSTI]

    Bywaters, Garrett; Danforth, William; Bevington, Christopher; Stowell, Jesse; Costin, Daniel

    2006-07-11T23:59:59.000Z

    A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially inside the stator while minimizing the potential for contamination. The turbine further includes a means for mounting a transformer below the nacelle within the tower.

  11. Direct drive wind turbine

    DOE Patents [OSTI]

    Bywaters, Garrett Lee; Danforth, William; Bevington, Christopher; Stowell, Jesse; Costin, Daniel

    2006-09-19T23:59:59.000Z

    A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially inside the stator while minimizing the potential for contamination. The turbine further includes a means for mounting a transformer below the nacelle within the tower.

  12. Direct drive wind turbine

    DOE Patents [OSTI]

    Bywaters, Garrett; Danforth, William; Bevington, Christopher; Jesse, Stowell; Costin, Daniel

    2007-02-27T23:59:59.000Z

    A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially inside the stator while minimizing the potential for contamination. The turbine further includes a means for mounting a transformer below the nacelle within the tower.

  13. Granular gases under extreme driving

    E-Print Network [OSTI]

    W. Kang; J. Machta; E. Ben-Naim

    2010-08-06T23:59:59.000Z

    We study inelastic gases in two dimensions using event-driven molecular dynamics simulations. Our focus is the nature of the stationary state attained by rare injection of large amounts of energy to balance the dissipation due to collisions. We find that under such extreme driving, with the injection rate much smaller than the collision rate, the velocity distribution has a power-law high energy tail. The numerically measured exponent characterizing this tail is in excellent agreement with predictions of kinetic theory over a wide range of system parameters. We conclude that driving by rare but powerful energy injection leads to a well-mixed gas and constitutes an alternative mechanism for agitating granular matter. In this distinct nonequilibrium steady-state, energy cascades from large to small scales. Our simulations also show that when the injection rate is comparable with the collision rate, the velocity distribution has a stretched exponential tail.

  14. A thermo-mechanical correlation with driving forces for hcp martensite and twin formations in the Fe-Mn-C system exhibiting multicomposition sets

    SciTech Connect (OSTI)

    Nakano, Jinichiro

    2013-02-01T23:59:59.000Z

    Thermodynamic properties of the Fe-Mn-C system were investigated by using an analytical model constructed by a CALPHAD approach. Stacking fault energy (SFE) of the fcc structure with respect to the hcp phase was always constant at T{sub 0}, independent of composition and temperature when the other related parameters were assumed to be constant. Experimental limits for the thermal hcp formation and the mechanical (deformation-induced) hcp formation were separated by the SFE at T{sub 0}. The driving force for the fcc to hcp transition, defined as a dimensionless value –dG{sub m}/(RT), was determined in the presence of Fe-rich and Mn-rich composition sets in each phase. Carbon tended to partition to the Mn-rich phase rather than to the Fe-rich phase for the studied compositions. The obtained results revealed a thermo-mechanical correlation with empirical yield strength, maximum true stress and maximum true strain. The proportionality between thermodynamics and mechanical properties is discussed.

  15. 1642 IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS, VOL. 14, NO. 4, DECEMBER 2013 Minimal-Energy Driving Strategy for High-Speed

    E-Print Network [OSTI]

    Tong, Lang

    , including the extended speed range, energy efficiency, and regenerative braking. Based on this model, train the regenerative brake to feed back the kinetic energy, etc. On the other hand, a proper driving strategy can also

  16. Vehicle Technologies Office: US DRIVE Materials Technical Team...

    Broader source: Energy.gov (indexed) [DOE]

    vehicle efficiency regardless of the vehicle size or propulsion system employed. This roadmap lays out the future direction for this research. U.S. DRIVE Materials Technical Team...

  17. The Drive for Energy Diversity and Sustainability: The Impact...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Diversity and Sustainability: The Impact on Transportation Fuels and Propulsion System Portfolios The Drive for Energy Diversity and Sustainability: The Impact on Transportation...

  18. US DRIVE Materials Technical Team Roadmap | Department of Energy

    Energy Savers [EERE]

    Materials Technical Team Roadmap US DRIVE Materials Technical Team Roadmap The Materials Technical Team (MTT) focuses primarily on reducing the mass of structural systems such as...

  19. Expected Technological Innovation to Drive Global Market for...

    Open Energy Info (EERE)

    Innovation to Drive Global Market for Microturbine Systems Home > Groups > Increase Natural Gas Energy Efficiency John55364's picture Submitted by John55364(95) Contributor...

  20. Maintenance Guide for Microirrigation Systems in the

    E-Print Network [OSTI]

    Maintenance Guide for Microirrigation Systems in the Southern Region By The Irrigation Water-monitoring devices to evaluate cleaning 5. Remedial maintenance for micro-irrigation systems affected by scaling are technically more complex than overhead sprinkler or flood irrigation systems. They require significant

  1. Maintaining Subsurface Drip Irrigation Systems (Spanish) 

    E-Print Network [OSTI]

    Enciso, Juan; Porter, Dana; Bordovsky, Jim; Fipps, Guy

    2004-09-07T23:59:59.000Z

    tapados, el ?cido inyectado en el agua de riego puede mejorar las caracter?sticas de infiltraci?n de algunos suelos y liberar micronutrientes al reducir el pH del suelo. Para reducir el costo, se puede inyectar ?cido sola- mente durante la ?ltima tercera...

  2. Maintaining Subsurface Drip Irrigation Systems (Spanish)

    E-Print Network [OSTI]

    Enciso, Juan; Porter, Dana; Bordovsky, Jim; Fipps, Guy

    2004-09-07T23:59:59.000Z

    - to del sistema. La siguiente tabla resume algunos ejemplos de los par?metros de la calidad del agua y su efecto en la posibilidad de taponamientos de los emisores. Mantenimiento de los filtros Los filtros son componentes esenciales del sis- tema SDI... diferencial de presi?n? para detectar una reducci?n de presi?n entre los fil- tros. Otros sistemas utilizan un cron?metro, que usualmente es programado por el operador. El lava- do se puede sincronizar seg?n la hora de riego y la calidad del agua. El intervalo...

  3. Impact of Potential Large-Scale Irrigation on the West African Monsoon and Its Dependence on Location of Irrigated Area

    E-Print Network [OSTI]

    Im, Eun-Soon

    This study investigates the impact of potential large-scale irrigation on the West African monsoon using the Massachusetts Institute of Technology regional climate model (MRCM). A new irrigation module is implemented to ...

  4. Evaluation of Smart Irrigation Controllers: Initial Bench Testing Results

    E-Print Network [OSTI]

    Swanson, Charles; Fipps, Guy

    COLLEGE OF AGRICULTURE AND LIFE SCIENCES TR-354 2009 Evaluation of Smart Irrigation Controllers: Initial Bench Testing Results July 2009 By Charles Swanson, Extension Associate Guy Fipps, Professor and Extension... Agricultural Engineer Rio Grande Basin Initiative Irrigation Technology Center Texas AgriLife Extension Service Texas Water Resources Institute Technical Report July 2009 TR 354 EVALUATION OF SMART IRRIGATION CONTROLLERS...

  5. Status and Trends of Irrigated Agriculture in Texas

    E-Print Network [OSTI]

    and available water. As shown in Figure 4, most agricultural irrigation is in West and South Texas, far fromStatus and Trends of Irrigated Agriculture in Texas Irrigation is critical to our food production and food security and is a vital component of Texas' productive agricultural economy.Texas ranks third

  6. Forest Irrigation of Tritiated Water: A Proven Tritiated Water Management Tool - 13357

    SciTech Connect (OSTI)

    Prater, Phil; Blount, Gerald; Kmetz, Thomas; Vangelas, Karen [Savannah River National Laboratory, Bldg. 773-42A, Aiken, SC 29808 (United States)] [Savannah River National Laboratory, Bldg. 773-42A, Aiken, SC 29808 (United States)

    2013-07-01T23:59:59.000Z

    Tritium releases from the Old Radioactive Waste Burial Ground (ORWBG) at the SRS in South Carolina has impacted groundwater and surface water. Tritiated groundwater plumes discharge into Fourmile Branch which is a small tributary of the Savannah River, a regional water resource. Taking advantage of the groundwater flow paths and the local topography a water collection and irrigation system was constructed and has been used at the SRS for over a decade to reduce these tritiated water releases to Fourmile Branch. The tritiated water is transferred to the atmosphere by evaporation from the pond surface, and after irrigation, wetted surface evaporation and evapotranspiration through the forest vegetation. Over the last decade SRS has irrigated over 120,000,000 gallons of tritiated water, which diverted over 6000 curies away from Fourmile Branch and the Savannah River. The system has been effective in reducing the flux of tritiated groundwater by approximately 70%. Mass balance studies of tritium in the forest soils before operations and over the last decade indicate that approximately 90% of the tritiated water that is irrigated is transferred to the atmosphere. Dose studies indicate that exposure to site workers and offsite maximally exposed individual is very low, approximately 6 mrem/year and 0.004 mrem/year, respectively. To consistently meet the flux reduction goal of tritium into Fourmile Branch optimization activities are proposed. These efforts will increase irrigation capacity and area. An additional 17 acres are proposed for an expansion of the area to be irrigated and a planting of approximately 40 acres of pine forest plantations is underway to expand irrigation capacity. Co-mingled with the tritiated groundwater are low concentrations of chlorinated volatile organic compounds (cVOCs), and 1,4-dioxane. Research studies and SRS field data indicate the forest irrigation system may have an added benefit of reducing the mass of these co-contaminants via degradation. This semi-passive system makes use of natural processes of hydrology and evapotranspiration to manage tritium-contaminated water by reducing its entrance into site streams and the Savannah River, as well as treating low levels of co-mingled VOCs. SRS expects to operate the system until the tritium decays to levels that represent a minimal impact to Fourmile Branch and the Savannah River, and meets the stakeholder expectations. (authors)

  7. Forest Irrigation Of Tritiated Water: A Proven Tritiated Water Management Tool

    SciTech Connect (OSTI)

    Vangelas, Karen; Blount, Gerald; Kmetz, Thomas; Prater, Phil

    2012-11-08T23:59:59.000Z

    Tritium releases from the Old Radioactive Waste Burial Ground (ORWBG) at the SRS in South Carolina has impacted groundwater and surface water. Tritiated groundwater plumes discharge into Fourmile Branch which is a small tributary of the Savannah River, a regional water resource. Taking advantage of the groundwater flow paths and the local topography a water collection and irrigation system was constructed and has been used at the SRS for over a decade to reduce these tritiated water releases to Fourmile Branch. The tritiated water is transferred to the atmosphere by evaporation from the pond surface, and after irrigation, wetted surface evaporation and evapotranspiration through the forest vegetation. Over the last decade SRS has irrigated over 120,000,000 gallons of tritiated water, which diverted over 6000 curies away from Fourmile Branch and the Savannah River. The system has been effective in reducing the flux of tritiated groundwater by approximately 70%. Mass balance studies of tritium in the forest soils before operations and over the last decade indicate that approximately 90% of the tritiated water that is irrigated is transferred to the atmosphere. Dose studies indicate that exposure to site workers and offsite maximally exposed individual is very low, approximately 6 mrem/year and 0.004 mrem/year, respectively. To consistently meet the flux reduction goal of tritium into Fourmile Branch optimization activities are proposed. These efforts will increase irrigation capacity and area. An additional 17 acres are proposed for an expansion of the area to be irrigated and a planting of approximately 40 acres of pine forest plantations is underway to expand irrigation capacity. Co-mingled with the tritiated groundwater are low concentrations of chlorinated volatile organic compounds (cVOCs), and 1,4-dioxane. Research studies and SRS field data indicate the forest irrigation system may have an added benefit of reducing the mass of these co-contaminants via degradation. This semi-passive system makes use of natural processes of hydrology and evapotranspiration to manage tritium-contaminated water by reducing its entrance into site streams and the Savannah River, as well as treating low levels of co-mingled VOCs. SRS expects to operate the system until the tritium decays to levels that represent a minimal impact to Fourmile Branch and the Savannah River, and meets the stakeholder expectations.

  8. Electric-Drive Vehicle engineering

    E-Print Network [OSTI]

    Berdichevsky, Victor

    Electric-Drive Vehicle engineering COLLEGE of ENGINEERING Electric-driveVehicleEngineering engineers for 80 years t Home to nation's first electric-drive vehicle engineering program and alternative-credit EDGE Engineering Entrepreneur Certificate Program is a great addition to an electric-drive vehicle

  9. 322 / JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING / SEPTEMBER/OCTOBER 2000 COMPREHENSIVE DESIGN OF MINIMUM COST IRRIGATION

    E-Print Network [OSTI]

    Chahar, B. R.

    OF MINIMUM COST IRRIGATION CANAL SECTIONS By Prabhata K. Swamee,1 Govinda C. Mishra,2 and Bhagu R. Chahar3

  10. Comments on: Electric Drive Systems

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWPSuccessAlamosCharacterization2Climate,CobaltColdin679April

  11. Sandia Energy - Electric Drive Systems

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItemResearch > TheNuclear Press ReleasesInApplied &ClimateContact UsECECElectric

  12. Traction Drive Systems Breakout Group

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23,EnergyChicopeeTechnologyfact sheet summarizesof

  13. Universal power transistor base drive control unit

    DOE Patents [OSTI]

    Gale, A.R.; Gritter, D.J.

    1988-06-07T23:59:59.000Z

    A saturation condition regulator system for a power transistor is disclosed which achieves the regulation objectives of a Baker clamp but without dumping excess base drive current into the transistor output circuit. The base drive current of the transistor is sensed and used through an active feedback circuit to produce an error signal which modulates the base drive current through a linearly operating FET. The collector base voltage of the power transistor is independently monitored to develop a second error signal which is also used to regulate base drive current. The current-sensitive circuit operates as a limiter. In addition, a fail-safe timing circuit is disclosed which automatically resets to a turn OFF condition in the event the transistor does not turn ON within a predetermined time after the input signal transition. 2 figs.

  14. Universal power transistor base drive control unit

    SciTech Connect (OSTI)

    Gale, Allan R. (Allen Park, MI); Gritter, David J. (Racine, WI)

    1988-01-01T23:59:59.000Z

    A saturation condition regulator system for a power transistor which achieves the regulation objectives of a Baker clamp but without dumping excess base drive current into the transistor output circuit. The base drive current of the transistor is sensed and used through an active feedback circuit to produce an error signal which modulates the base drive current through a linearly operating FET. The collector base voltage of the power transistor is independently monitored to develop a second error signal which is also used to regulate base drive current. The current-sensitive circuit operates as a limiter. In addition, a fail-safe timing circuit is disclosed which automatically resets to a turn OFF condition in the event the transistor does not turn ON within a predetermined time after the input signal transition.

  15. Ground water provides drinking water, irrigation for

    E-Print Network [OSTI]

    Saldin, Dilano

    Ground water provides drinking water, irrigation for crops and water for indus- tries. It is also connected to surface waters, and maintains the flow of rivers and streams and the level of wetlands- tion of those along Lake Michigan, most communi- ties, farms and industries still rely on ground water

  16. Drive laser Photocathode

    E-Print Network [OSTI]

    Anlage, Steven

    Drive laser Gun cavity Scale 2" 3"0 1" Photocathode Schematic Overview of a Free Electron Laser Steel Sleeve Compressed Cs2CrO4:Ti Pellet (0.725g) 1.27 cm Nickel-Assisted Hermetic Braze #12;Foundation

  17. Deep subsurface drip irrigation using coal-bed sodic water: Part I. Water and solute movement

    SciTech Connect (OSTI)

    Bern, Carleton R.; Breit, George N.; Healy, Richard W.; Zupancic, John W.; Hammack, Richard

    2013-02-01T23:59:59.000Z

    Water co-produced with coal-bed methane (CBM) in the semi-arid Powder River Basin of Wyoming and Montana commonly has relatively low salinity and high sodium adsorption ratios that can degrade soil permeability where used for irrigation. Nevertheless, a desire to derive beneficial use from the water and a need to dispose of large volumes of it have motivated the design of a deep subsurface drip irrigation (SDI) system capable of utilizing that water. Drip tubing is buried 92 cm deep and irrigates at a relatively constant rate year-round, while evapotranspiration by the alfalfa and grass crops grown is seasonal. We use field data from two sites and computer simulations of unsaturated flow to understand water and solute movements in the SDI fields. Combined irrigation and precipitation exceed potential evapotranspiration by 300–480 mm annually. Initially, excess water contributes to increased storage in the unsaturated zone, and then drainage causes cyclical rises in the water table beneath the fields. Native chloride and nitrate below 200 cm depth are leached by the drainage. Some CBM water moves upward from the drip tubing, drawn by drier conditions above. Chloride from CBM water accumulates there as root uptake removes the water. Year over year accumulations indicated by computer simulations illustrate that infiltration of precipitation water from the surface only partially leaches such accumulations away. Field data show that 7% and 27% of added chloride has accumulated above the drip tubing in an alfalfa and grass field, respectively, following 6 years of irrigation. Maximum chloride concentrations in the alfalfa field are around 45 cm depth but reach the surface in parts of the grass field, illustrating differences driven by crop physiology. Deep SDI offers a means of utilizing marginal quality irrigation waters and managing the accumulation of their associated solutes in the crop rooting zone.

  18. A Driving Simulator for Teaching Embedded Automotive Control Applications

    E-Print Network [OSTI]

    Gillespie, Brent

    A Driving Simulator for Teaching Embedded Automotive Control Applications Paul G. Griffiths component uses a typical automotive power- train micro-controller and teaches topics in system dynamics students build a fixed-based driving simulator to test advanced automotive control system designs

  19. Electrical motor/generator drive apparatus and method

    DOE Patents [OSTI]

    Su, Gui Jia

    2013-02-12T23:59:59.000Z

    The present disclosure includes electrical motor/generator drive systems and methods that significantly reduce inverter direct-current (DC) bus ripple currents and thus the volume and cost of a capacitor. The drive methodology is based on a segmented drive system that does not add switches or passive components but involves reconfiguring inverter switches and motor stator winding connections in a way that allows the formation of multiple, independent drive units and the use of simple alternated switching and optimized Pulse Width Modulation (PWM) schemes to eliminate or significantly reduce the capacitor ripple current.

  20. Impact of Climate Change on Irrigation Water Availability, Crop Water Requirements and Soil Salinity in the SJV, CA

    E-Print Network [OSTI]

    Hopmans, Jan W; Maurer, Edwin P

    2008-01-01T23:59:59.000Z

    impact of climate change on irrigated agriculture in the 21potential climate change impacts on irrigated agriculture.climate change on sustainability of irrigated agriculture,

  1. Variable Frequency Pump Drives

    E-Print Network [OSTI]

    Karassik, I. J.; Petraccaro, L. L.; McGuire, J. T.

    . In a conventional pump and driver arrangement (for example, a centrifugal pump coupled to an AC induction motor'with no speed control provision), the motor runs at. a constant speed, which is determined by the incoming line frequency, and the pump... when it is needed. LONG RANGE DESIGN TRENDS The growing use of variable-frequency electric motor drives will permit the integration of 60 and 50 cycle pump lines. One important concern for future improvements is the growing possibility...

  2. Uniformity of Sprinkler and Microirrigation Systems for Nurseries 1

    E-Print Network [OSTI]

    Hill, Jeffrey E.

    Nursery production in Florida requires irrigation. The majority of the systems found in container and field nurseries are pressurized irrigation systems, which are sprinklers or some type of microirrigation in smaller containers, use overhead sprinkler systems. Two terms which describe the performance of irrigation

  3. Simulation of Phase Stability at the Flat Top of the CLIC Drive Beam

    E-Print Network [OSTI]

    Gerbershagen, A; Burrows, P

    2011-01-01T23:59:59.000Z

    The drive beam phase stability is one of the critical issues of the Compact Linear Collider (CLIC). In this paper the generation and propagation of drive beam phase errors is studied for effects that vary during the drive beam pulse. This includes the influence of drive beam current and phase errors as well as of drive beam accelerator RF phase and amplitude errors on the drive beam phase after the compressor chicanes and the analysis of the propagation of these errors through the drive beam combination scheme. The impact of the imperfections on the main beam is studied including the possible correction with help of a feedforward system.

  4. Vehicle Technologies Office: 2014 Electric Drive Technologies...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Electric Drive Technologies Annual Progress Report Vehicle Technologies Office: 2014 Electric Drive Technologies Annual Progress Report The Electric Drive Technologies research and...

  5. Initial Evaluation of Smart Irrigation Controllers: Year Two (2009) Results

    E-Print Network [OSTI]

    Swanson, Charles; Fipps, Guy

    COLLEGE OF AGRICULTURE AND LIFE SCIENCES TR-364 2010 Initial Evaluation of Smart Irrigation Controllers: Year Two (2009) Results By: Charles Swanson and Guy Fipps, P.E. Department of Biological... OF SMART IRRIGATION CONTROLLERS: YEAR TWO (2009) RESULTS 1 By Charles Swanson and Guy Fipps, P.E 2 April 27, 2010 A Report Prepared for Task 2 of the Rio Grande Basin Initiative Irrigation Technology Center Texas AgriLIFE Extension Service...

  6. Energy Use and Irrigation Scheduling for Efficient Water Use

    E-Print Network [OSTI]

    Marek, Thomas; Porter, Dana

    Engineer USDA ARS Bushland, Texas Nicholas Kenny Extension Program Specialist I Texas AgriLife Extension Service, Amarillo, Texas and Jed Moorhead Technician II Texas AgriLife Research Amarillo, Texas September 15, 2010 2 Energy Use... of soils, plants is crucial to efficient irrigation. Southwest Farm Press. October 2, 2008. Posted online Oct 14, 2008 at: http://southwestfarmpress.com/irrigation/soil-irrigation-1014. Presentations at Extension meetings Kenny, Nicholas. 2008...

  7. Some Principles and Practices in the Irrigation of Texas Soils.

    E-Print Network [OSTI]

    Bloodworth, Morris E.

    1959-01-01T23:59:59.000Z

    exist among soil, water and plants. Good irrigation practices also must take into ac- t such important factors as soil fertility. amount and quality of water, adapted crops and varieties, land xration for irrigation, water distribution over the land..., irrigation timing to suit crop needs, rate of water application for a particular soil type, capacity of soils to store and release water, rates of seeding and root development and distribution within the soil storage reservoir for obtaining both water...

  8. Outlook for Energy and Implications for Irrigated Agriculture 

    E-Print Network [OSTI]

    Patton, W. P.; Lacewell, R. D.

    1977-01-01T23:59:59.000Z

    TR- 87 1977 Outlook for Energy and Implications for Irrigated Agriculture W.P. Patton R.D. Lacewell Texas Water Resources Institute Texas A&M University ...

  9. Modesto Irrigation District- Commercial Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Modesto Irrigation District’s Commercial Power Saver Rebate Program offers incentives to commercial, industrial, and agricultural customers for the purchase and installation of qualifying energy...

  10. Modesto Irrigation District- New Home Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Modesto Irrigation District's MPower New Home Program provides incentives to builders and homeowners for designing and building energy-efficient homes. Eligible homes must meet the guidelines for...

  11. Modesto Irrigation District- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Modesto Irrigation District’s Home Rebate Program offers residential customers cash rebates for the purchase and installation of qualifying energy efficient products installed in existing homes....

  12. Turlock Irrigation District- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Turlock Irrigation District (TID) offers a residential rebate program for customers who install energy-efficient equipment in their homes. Eligible equipment includes

  13. Vera Irrigation District #15- Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Vera Irrigation District #15 offers rebates to electric customers who improve energy efficiency. Rebates are available for water heaters, windows, heat pumps, clothes washer, duct sealing and...

  14. Base drive circuit

    DOE Patents [OSTI]

    Lange, A.C.

    1995-04-04T23:59:59.000Z

    An improved base drive circuit having a level shifter for providing bistable input signals to a pair of non-linear delays. The non-linear delays provide gate control to a corresponding pair of field effect transistors through a corresponding pair of buffer components. The non-linear delays provide delayed turn-on for each of the field effect transistors while an associated pair of transistors shunt the non-linear delays during turn-off of the associated field effect transistor. 2 figures.

  15. Base drive circuit

    DOE Patents [OSTI]

    Lange, Arnold C. (Livermore, CA)

    1995-01-01T23:59:59.000Z

    An improved base drive circuit (10) having a level shifter (24) for providing bistable input signals to a pair of non-linear delays (30, 32). The non-linear delays (30, 32) provide gate control to a corresponding pair of field effect transistors (100, 106) through a corresponding pair of buffer components (88, 94). The non-linear delays (30, 32) provide delayed turn-on for each of the field effect transistors (100, 106) while an associated pair of transistors (72, 80) shunt the non-linear delays (30, 32) during turn-off of the associated field effect transistor (100, 106).

  16. Robust feasibility for control of water flow in a reservoir-canal system

    E-Print Network [OSTI]

    . INTRODUCTION Open-channel hydraulic systems are central to a variety of human needs such as irrigation, power of irrigation systems has be- come a crucial issue. Historically, irrigation systems around the world wereRobust feasibility for control of water flow in a reservoir-canal system Saurabh Amin, Alexandre M

  17. Co-Simulation of an Electric Traction Drive Christoph Schulte and Joachim Bocker

    E-Print Network [OSTI]

    Paderborn, Universität

    ) for an electric drive, where the control structure, power electronics and motor are modeled in different environ works as a combined system. The system model of the electric drive discussed in this work consists--For the simulation of electrical drives, reduced- order models or simple look-up tables are often used in order

  18. Design and testing of a sensorless switched reluctance motor drive with a custom integrated circuit controller 

    E-Print Network [OSTI]

    Zhang, Yingxia

    1996-01-01T23:59:59.000Z

    The switched reluctance motor (SRM) has become an attractive alternative candidate to conventional ae or dc motors for adjustable speed drive applications. The SRM drive system consists of a power converter and a control section. Making the control...

  19. Valuing Groundwater Services and Water Portfolio in Irrigated Agriculture with a Hedonic Pricing Model

    E-Print Network [OSTI]

    Mukherjee, Monobina

    2013-01-01T23:59:59.000Z

    Impact of Climate Change on Irrigated Agriculture inimpact of climate change on irrigated agriculture inimpacts of climate change in agriculture, it is essential to

  20. Redundant arrays of IDE drives

    SciTech Connect (OSTI)

    D.A. Sanders et al.

    2002-01-02T23:59:59.000Z

    The authors report tests of redundant arrays of IDE disk drives for use in offline high energy physics data analysis. Parts costs of total systems using commodity EIDE disks are now at the $4000 per Terabyte level. Disk storage prices have now decreased to the point where they equal the cost per Terabyte of Storage Technology tape silos. The disks, however, offer far better granularity; even small institutions can afford to deploy systems. The tests include reports on software RAID-5 systems running under Linux 2.4 using Promise Ultra 100{trademark} disk controllers. RAID-5 protects data in case of a single disk failure by providing parity bits. Tape backup is not required. Journaling file systems are used to allow rapid recovery from crashes. The data analysis strategy is to encapsulate data and CPU processing power. Analysis for a particular part of a data set takes place on the PC where the data resides. The network is only used to put results together. They explore three methods of moving data between sites; internet transfers, not pluggable IDE disks in FireWire cases, and DVD-R disks.

  1. Irrigation Training Program For Texas Agricultural Producers

    E-Print Network [OSTI]

    Harris, B.L.

    that culminated with the completion of two editions (North and South) of an ITP manual, an all-inclusive resource manual for irrigators, technicians, crop consultants and other professionals within the industry, and the completion of six training conferences...-15-08 An electronic version of the ITP Manual was submitted to TWRI during this quarter.? TWRI refined the ITP manual to create a more user-friendly format so that growers can easily access the vast amount ? of information and resources in the manual. 9...

  2. Some effects of irrigation on peach quality

    E-Print Network [OSTI]

    Kent, Laura Katherine

    1979-01-01T23:59:59.000Z

    ~'major Subject: Food Science and Technology SOME EFFECTS OF IRRIGATION ON PEACH QUALITY A Thesis by Laura Katherine Kent Approved as to style and content by: Chairman o mmittee Head o Department) er Member August 1979 ABSTRACT Some Effects...-significant difference between reps and within trees of reps illustrated proper experimental design and orchard maintenance. Picking 1 (Pr & F=0. 4021) picking 2 (Pr & F=0. 3205) and picking 4 (Pr & F=0. 6140) were non- significant; however, picking 3 (Pr & F=O. 0001...

  3. Imperial Irrigation District | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetecGtel JumpCounty,Jump to: navigation, search Stage 3Imperial Irrigation

  4. Vera Irrigation District | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlin BaxinUmwelt ManagementVera Irrigation District Jump to: navigation,

  5. Initial Evaluation of Smart Irrigation Controllers: Year Two (2009) Results 

    E-Print Network [OSTI]

    Swanson, Charles; Fipps, Guy

    2010-01-01T23:59:59.000Z

    to determine their performance and reliability under Texas conditions from an “end-user” point of view. The “end-user” is considered to be the landscape or irrigation professional (such as a Licensed Irrigator in Texas) installing the controller. During...

  6. Effects of Great Plains Irrigation on Regional Climate

    E-Print Network [OSTI]

    Huber, David B.

    2011-08-31T23:59:59.000Z

    of radiative and turbulent fluxes, the development of the planetary boundary layer, and the transport of water vapor from the regions of irrigation. The first two effects have the potential to drastically alter the climate of irrigated regions of the Great...

  7. Driving Demand | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    strategies, results achieved to date, and advice for other programs. Driving Demand for Home Energy Improvements. This guide, developed by the Lawrence Berkeley National...

  8. Estimates of Savings Achievable from Irrigation Controller

    SciTech Connect (OSTI)

    Williams, Alison; Fuchs, Heidi; Whitehead, Camilla Dunham

    2014-03-28T23:59:59.000Z

    This paper performs a literature review and meta-analysis of water savings from several types of advanced irrigation controllers: rain sensors (RS), weather-based irrigation controllers (WBIC), and soil moisture sensors (SMS).The purpose of this work is to derive average water savings per controller type, based to the extent possible on all available data. After a preliminary data scrubbing, we utilized a series of analytical filters to develop our best estimate of average savings. We applied filters to remove data that might bias the sample such as data self-reported by manufacturers, data resulting from studies focusing on high-water users, or data presented in a non-comparable format such as based on total household water use instead of outdoor water use. Because the resulting number of studies was too small to be statistically significant when broken down by controller type, this paper represents a survey and synthesis of available data rather than a definitive statement regarding whether the estimated water savings are representative.

  9. Ozone (o3) efficacy on reduction of phytophthora capsici in recirculated horticultural irrigation water

    E-Print Network [OSTI]

    McDonald, Garry Vernon

    2009-05-15T23:59:59.000Z

    through enriched environments, or by interfering with water treatment systems such as filtration (MacDonald et al., 1994). Phytophthora, in particular, has been reported as a major contaminant of recirculated nursery irrigation water (MacDonald et al... environment which allows for greater electrochemical ozone formation. The Nafion membrane, as mentioned, is highly resistant to chemical attack by ozone. A final cathode reaction involves reducing oxygen from ambient air and protons (H + ) flowing from...

  10. Strain based preload measurement in drive axle pinion bearings

    E-Print Network [OSTI]

    Thomas, Anthony H., 1981-

    2005-01-01T23:59:59.000Z

    Bearing setting has a significant impact on bearing life and system performance. A strain based load measurement technique that has been previously developed and patented will be used to measure preload in automotive drive ...

  11. A cloud-assisted design for autonomous driving

    E-Print Network [OSTI]

    Suresh Kumar, Swarun

    This paper presents Carcel, a cloud-assisted system for autonomous driving. Carcel enables the cloud to have access to sensor data from autonomous vehicles as well as the roadside infrastructure. The cloud assists autonomous ...

  12. Shallow groundwater and soil chemistry response to 3 years of subsurface drip irrigation using coalbed-methane-produced water

    SciTech Connect (OSTI)

    Bern, C. R.; Boehlke, A. R.; Engle, M. A.; Geboy, N. J.; Schroeder, K. T.; Zupancic, J. W.

    2013-12-01T23:59:59.000Z

    Disposal of produced waters, pumped to the surface as part of coalbed methane (CBM) development, is a significant environmental issue in the Wyoming portion of the Powder River Basin, USA. High sodium adsorption ratios (SAR) of the waters could degrade agricultural land, especially if directly applied to the soil surface. One method of disposing of CBM water, while deriving beneficial use, is subsurface drip irrigation (SDI), where acidified CBM waters are applied to alfalfa fields year-round via tubing buried 0.92 m deep. Effects of the method were studied on an alluvial terrace with a relatively shallow depth to water table (?3 m). Excess irrigation water caused the water table to rise, even temporarily reaching the depth of drip tubing. The rise corresponded to increased salinity in some monitoring wells. Three factors appeared to drive increased groundwater salinity: (1) CBM solutes, concentrated by evapotranspiration; (2) gypsum dissolution, apparently enhanced by cation exchange; and (3) dissolution of native Na–Mg–SO{sub 4} salts more soluble than gypsum. Irrigation with high SAR (?24) water has increased soil saturated paste SAR up to 15 near the drip tubing. Importantly though, little change in SAR has occurred at the surface.

  13. Mechanical front wheel drive tractors: a field performance study

    E-Print Network [OSTI]

    Babacz, William Adam

    1986-01-01T23:59:59.000Z

    . . . . . . . . . . . . . . . . . . . . . . . . . Comparison of 2WD and NFWD Tractors . . . . . . . . . . . . . . . . . . Comparison of NFWD Tractors Operating in FWA and 2WO Modes III TRACTOR PERFORNANCE NONITORING SYSTEM Instrumentation System Rear Axle Torque . Front Axle Driveline Torque Front...-sized tractors and may be operated with the mechanical front wheel drive engaged in a front wheel assist (FWA) mode or disengaged in a two-wheel drive (2WD) mode. The advertised benefits of NFWD are increased traction and reduced fuel consumption. Agricultural...

  14. Power Electronics and Electrical Drives Prof. Dr.-Ing. Joachim Bcker

    E-Print Network [OSTI]

    Hellebrand, Sybille

    Power Electronics and Electrical Drives Prof. Dr.-Ing. Joachim Böcker Research Topics Mechatronic Systems, Electrical Drives and Electric Vehicles Control, modeling and optimization of electrical drives vehiclesElectric vehicles RailCab Power Electronics Switched-mode power supplies High efficiency

  15. VIRTUAL REALITY DRIVING SIMULATION: Integrating Infrastructure Plans, Traffic Models, and Driving Behaviors

    E-Print Network [OSTI]

    to include 3D models, animated traffic and human characters, as well as functions that allow users to take-1- VIRTUAL REALITY DRIVING SIMULATION: Integrating Infrastructure Plans, Traffic Models@forum8.co.jp Summary: This paper presents a virtual reality (VR) system that enables large

  16. Texas Legislative and Irrigation Districts of the Rio Grande River Basin: A Map Series 

    E-Print Network [OSTI]

    Leigh, Eric; Fipps, G.

    2008-01-01T23:59:59.000Z

    Improvement District No.3 HCWID3 La Feria Irrigation District-Cameron County No.3 La Feria Santa Cruz Irrigation District No.15 Santa Cruz Santa Maria Irrigation District-Cameron County No.4 Santa Maria United Irrigation District of Hidalgo County United....6 34,913 Hidalgo County Municipal Utility District No.1 1,120 Hidalgo County Water Improvement District No.3 9,753 La Feria Irrigation District-Cameron County No.3 75,626 Santa Cruz Irrigation District No.15 75,080 Santa Maria Irrigation...

  17. Texas Legislative and Irrigation Districts of the Rio Grande River Basin: A Map Series

    E-Print Network [OSTI]

    Leigh, Eric; Fipps, G.

    Improvement District No.3 HCWID3 La Feria Irrigation District-Cameron County No.3 La Feria Santa Cruz Irrigation District No.15 Santa Cruz Santa Maria Irrigation District-Cameron County No.4 Santa Maria United Irrigation District of Hidalgo County United....6 34,913 Hidalgo County Municipal Utility District No.1 1,120 Hidalgo County Water Improvement District No.3 9,753 La Feria Irrigation District-Cameron County No.3 75,626 Santa Cruz Irrigation District No.15 75,080 Santa Maria Irrigation...

  18. Towards a System Dynamics Framework for Un-derstanding Interactions of Head-and Tail-Users

    E-Print Network [OSTI]

    Richner, Heinz

    -Users in Irrigation Systems in Kyrgyzstan Justus Gallati1 , Bakyt Askaraliev2 , Peter Niederer3 , Daniel Maselli4 1 / NCCR North-South, email: daniel.maselli@cde.unibe.ch Abstract Irrigation and water supply systems;2 1 Introduction Irrigation and water supply systems are of vital importance for agriculture in many

  19. Management of Trickle Irrigated Orchards for Increased Water Use Efficiency

    E-Print Network [OSTI]

    Punthakey, J. F.; McFarland, M. J.; Rodrigue, P. B.; Worthington, J. W.

    of individual trees. Improved irrigation scheduling methods offer the potential for further savings in water and energy to pressurize the water since peach trees require less than a fully-watered state for production. This report describes research to determine...

  20. Economically Optimum Irrigation Patternsfor Grain Sorghum Production: Texas High Plains

    E-Print Network [OSTI]

    Zavaleta, L. R.; Lacewell, R. D.; Taylor, C. R.

    generated at every starting point for each of the production periods. If discrepancies between the expected and the realized values existed, then, based on current conditions a reevaluation of the control variable, irrigation water, was made and the decision...

  1. Calculating Horsepower Requirements and Sizing Supply Pipelines for Irrigation 

    E-Print Network [OSTI]

    Fipps, Guy

    1995-09-05T23:59:59.000Z

    Pumping costs are often one of the largest single expenses in irrigated agriculture. This publication explains how to lower pumping costs by calculating horsepower requirements and sizing supply pipelines correctly. Examples take the reader through...

  2. adequate irrigation management: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Lewis, David Carroll 1985-01-01 4 Guidelines for Developing Soil and Water Management Programs: Irrigated Pecans Texas A&M University - TxSpace Summary: The book...

  3. Outlook for Energy and Implications for Irrigated Agriculture

    E-Print Network [OSTI]

    Patton, W. P.; Lacewell, R. D.

    gas, electricity, liquid petroleum gas and diesel can cause economic hardship for irrigators, particularly if those increases are unanticipated. The purpose of this paper is to briefly summarize important trends in the current domestic energy situation...

  4. Base drive circuit for a four-terminal power Darlington

    DOE Patents [OSTI]

    Lee, Fred C. (Blacksburg, VA); Carter, Roy A. (Salem, VA)

    1983-01-01T23:59:59.000Z

    A high power switching circuit which utilizes a four-terminal Darlington transistor block to improve switching speed, particularly in rapid turn-off. Two independent reverse drive currents are utilized during turn off in order to expel the minority carriers of the Darlington pair at their own charge sweep-out rate. The reverse drive current may be provided by a current transformer, the secondary of which is tapped to the base terminal of the power stage of the Darlington block. In one application, the switching circuit is used in each power switching element in a chopper-inverter drive of an electric vehicle propulsion system.

  5. Grand Challenge Portfolio: Driving Innovations in Industrial...

    Broader source: Energy.gov (indexed) [DOE]

    Documents & Publications Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 8 Grand Challenge Portfolio: Driving Innovations in...

  6. Direct drive field actuator motors

    DOE Patents [OSTI]

    Grahn, A.R.

    1998-03-10T23:59:59.000Z

    A positive-drive field actuator motor is described which includes a stator carrying at least one field actuator which changes in dimension responsive to application of an energy field, and at least one drive shoe movable by the dimensional changes of the field actuator to contact and move a rotor element with respect to the stator. Various embodiments of the motor are disclosed, and the rotor element may be moved linearly or arcuately. 62 figs.

  7. Diagnosis and Management of Salinity Problems In Irrigated Pecan Productions

    E-Print Network [OSTI]

    Miyamoto, S.

    field test conducted in a citrus orchard shows improved salt leaching under mulch. Table 3. The target leaching fraction (LF) to control soil salinity below 2.5 dS m -1 in the saturation extract. Irrig. Water salinity sandy clayey sandy clayey d.... Miyamoto Professor and Soil Scientist Texas A&M University Agricultural Research Center at El Paso Introduction Pecans, along with Almonds and Walnuts, are among the salt sensitive tree crops currently grown under irrigation. Yet, many...

  8. Low backlash direct drive actuator

    DOE Patents [OSTI]

    Kuklo, T.C.

    1994-10-25T23:59:59.000Z

    A low backlash direct drive actuator is described which comprises a motor such as a stepper motor having at least 200 steps per revolution; a two part hub assembly comprising a drive hub coaxially attached to the shaft of the motor and having a plurality of drive pins; a driven hub having a plurality of bores in one end thereof in alignment with the drive pins in the drive hub and a threaded shaft coaxially mounted in an opposite end of the driven hub; and a housing having a central bore therein into which are fitted the drive hub and driven hub, the housing having a motor mount on one end thereof to which is mounted the stepper motor, and a closed end portion with a threaded opening therein coaxial with the central bore in the housing and receiving therein the threaded shaft attached to the driven hub. Limit switches mounted to the housing cooperate with an enlarged lip on the driven hub to limit the lateral travel of the driven hub in the housing, which also acts to limit the lateral travel of the threaded shaft which functions as a lead screw. 10 figs.

  9. Potential for Photovoltaic Solar Installation in Non-Irrigated Corners of Center Pivot Irrigation Fields in the State of Colorado

    SciTech Connect (OSTI)

    Roberts, B.

    2011-07-01T23:59:59.000Z

    The State of Colorado expressed an interest in assessing the potential for photovoltaic (PV) solar installations on non-irrigated corners of center-pivot irrigation (CPI) fields throughout the state. Using aerial imagery and irrigated land data available from the Colorado Water Conservation Board, an assessment of potentially suitable sites was produced. Productivity estimates were calculated from that assessment. The total area of non-irrigated corners of CPI fields in Colorado was estimated to be 314,674 acres, which could yield 223,418 acres of installed PV panels assuming 71% coverage in triangular plots. The total potential annual electricity production for the state was estimated to be 56,821 gigawatt hours (GWH), with an average of 1.3 GWH per available plot.

  10. Unwinding the Spin on Variable Speed Drive Air Compressors

    E-Print Network [OSTI]

    Beals, C. E.

    2006-01-01T23:59:59.000Z

    Unwinding the Spin on Variable Speed Drive Air Compressors By Chris E. Beals, President, Air System Management, Inc Over the past several years, the variable speed drive (VSD) compressor has become a frequent choice for new compressor... purchases. The VSD compressor’s popularity is partly due to rising energy prices and its efficiency as a trim compressor. Unfortunately, much of the VSD compressor’s popularity is a result of spin applied by the marketers. For example, sales...

  11. Optimal investment and scheduling of distributed energy resources with uncertainty in electric vehicles driving schedules

    E-Print Network [OSTI]

    Cardoso, Goncalo

    2014-01-01T23:59:59.000Z

    management of small electric energy systems including V2Gand renewable energy sources,” Electric Power Systemsof electric-drive vehicles with renewable energy,” Energy,

  12. Strong mechanical driving of a single electron spin

    E-Print Network [OSTI]

    Arne Barfuss; Jean Teissier; Elke Neu; Andreas Nunnenkamp; Patrick Maletinsky

    2015-03-23T23:59:59.000Z

    Quantum devices for sensing and computing applications require coherent quantum systems which can be manipulated in a fast and robust way. Such quantum control is typically achieved using external electric or magnetic fields which drive the system's orbital or spin degrees of freedom. However, most of these approaches require complex and unwieldy antenna or gate structures, and with few exceptions are limited to the regime of weak driving. Here, we present a novel approach to strongly and coherently drive a single electron spin in the solid state using internal strain fields in an integrated quantum device. Specifically, we study individual Nitrogen-Vacancy (NV) spins embedded in diamond mechanical oscillators and exploit the intrinsic strain coupling between spin and oscillator to strongly drive the spins. As hallmarks of the strong driving regime, we directly observe the energy spectrum of the emerging phonon-dressed states and employ our strong, continuous driving for enhancement of the NV spin coherence time. Our results constitute a first step towards strain-driven, integrated quantum devices and open new perspectives to investigate unexplored regimes of strongly driven multi-level systems and to study exotic spin dynamics in hybrid spin-oscillator devices.

  13. Onsite Wastewater Treatment Systems: Graywater Safety

    E-Print Network [OSTI]

    Melton, Rebecca; Lesikar, Bruce J.

    2008-10-23T23:59:59.000Z

    irrigation and decr,ease the amount of wastewater entering sewers or onsite wastewater treatment systems. Onsite wastewater treatment systems However, homeowners who irrigate their lawns with graywater need to understand the risks and safety issues.... Residential wastewater can be classified as either blackwater (sew- age containing fecal matter or food wastes) or graywater. If graywater is collected separately from blackwater, it can be dispersed as irrigation water with less treatment than...

  14. What drives glacial cycles

    SciTech Connect (OSTI)

    Broecker, W.S.; Denton, G.H.

    1990-01-01T23:59:59.000Z

    The Milankovitch theory advocates that the glacial cycles have three components: the tilt of the earth's spin axis; the shape of the earth's orbit; and the interaction between the tilt and the eccentricity effects. These three factors work together to vary the amount of sunshine reaching the high northern latitudes in summer and allow the great ice sheets to grow during intervals of cool summers and mild winters. Evidence is presented which indicates that the circulation pattern of the Atlantic ocean was shifted dramatically about 14,000 years ago, at the same time that glaciers in both hemispheres started to retreat. The authors believe that massive reorganizations of the ocean-atmosphere system are the key events that link cyclic changes in the earth's orbit to the advance and retreat of ice sheet.

  15. This article has been accepted for inclusion in a future issue of this journal. Content is final as presented, with the exception of pagination. IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY 1

    E-Print Network [OSTI]

    MODERNIZATION of irrigation canal systems is often viewed as a solution for improving their operational performance. In many countries, networked and fully gated irrigation systems have been instrumented vastly improve the performance of irrigation systems [1], [2]. To sustain modernization plans

  16. Plant Water Use and Growth in Response to Soil Salinity in Irrigated Agriculture

    E-Print Network [OSTI]

    Runkle, Benjamin Reade

    2009-01-01T23:59:59.000Z

    Journal of Sustainable Agriculture, 27(1): 5-50. Feng, G. ,Salinity in Irrigated Agriculture by Benjamin Reade KrepsSalinity in Irrigated Agriculture by Benjamin Reade Kreps

  17. Flatness-Based Control of Open-Channel Flow in an Irrigation Canal Using SCADA

    E-Print Network [OSTI]

    Boyer, Edmond

    Flatness-Based Control of Open-Channel Flow in an Irrigation Canal Using SCADA Tarek Rabbani, Simon of an algorithm for real-time irrigation operations using a supervision, control, and data acquisition (SCADA

  18. Combined water use of turf and woody ornamentals in an irrigated South Texas landscape 

    E-Print Network [OSTI]

    Havlak, Roger Dale

    2004-01-01T23:59:59.000Z

    Landscape water conservation and potential evapotranspiration (PET or ET[p]) based irrigation programs are hindered by a lack of data on actual evapotranspiration (ET[a]) rates of multiple plant species landscapes. Irrigation coefficients...

  19. Root water extraction zones of irrigated cotton (Gossypium Hirsutum L.) in the Brazos Valley, Texas

    E-Print Network [OSTI]

    Chemelil, Mathew Chirchir

    1986-01-01T23:59:59.000Z

    'ith dry summers. More farmers are therefore increasing their number of hectares under irrigation to benefit from these large increases. Vt'ith increased irrigation of cotton in these counties, the Soil Conservation Service(SCS) embarked on a v...

  20. Optimization of Water Use Efficiency Through Trickle Irrigation and the Stress Day Index

    E-Print Network [OSTI]

    Wilke, O.C.; Hiler, E. A.

    Water deficits reduce plant growth and subsequently, crop yields. Man has relied upon irrigation to overcome these crop water deficiencies. But since the present supplies of water are limited, more efficient irrigation application methods must...

  1. The 1997 Irrigation Suspension Program for the Edwards Aquifer: Evaluation and Alternatives

    E-Print Network [OSTI]

    Keplinger, Keith O.; McCarl, Bruce A.

    (drought) Management Rules. The Aquifer region, however, experienced a wet Spring in 1997, so that even irrigators not enrolled in the program applied little or no irrigation water. If conditions were dry in Spring 1997, aquifer simulation results indicate...

  2. The 1997 Irrigation Suspension Program for the Edwards Aquifer: Evaluation and Alternatives 

    E-Print Network [OSTI]

    Keplinger, Keith O.; McCarl, Bruce A.

    1998-01-01T23:59:59.000Z

    (drought) Management Rules. The Aquifer region, however, experienced a wet Spring in 1997, so that even irrigators not enrolled in the program applied little or no irrigation water. If conditions were dry in Spring 1997, aquifer simulation results indicate...

  3. Infrastructure investment and policy management of water resources for small-scale irrigated agriculture

    E-Print Network [OSTI]

    Amornvivat, Sutapa, 1974-

    2003-01-01T23:59:59.000Z

    We investigate the options for enhancing the welfare of small farmers in Thailand through subsidies of irrigation infrastructure. Enhanced water storage and irrigation can significantly improve yield and the welfare of the ...

  4. Anomalous-viscosity current drive

    DOE Patents [OSTI]

    Stix, T.H.; Ono, M.

    1986-04-25T23:59:59.000Z

    The present invention relates to a method and apparatus for maintaining a steady-state current for magnetically confining the plasma in a toroidal magnetic confinement device using anomalous viscosity current drive. A second aspect of this invention relates to an apparatus and method for the start-up of a magnetically confined toroidal plasma.

  5. Laser Direct Drive: Scientific Advances,

    E-Print Network [OSTI]

    1 Laser Direct Drive: Scientific Advances, Technical Achievements, and the Road To Fusion Energy energy gain ( 40) at 1 MJ laser energy · Advanced lasers/ target designs overcome uniformity requirements, medical applications) Gas laser medium is easy to cool (tough to break gas) Nike single beam focus #12

  6. Power Electronics and Motor Drives Laboratory Integrating Energy Storage withIntegrating Energy Storage with

    E-Print Network [OSTI]

    Saldin, Dilano

    Power Electronics and Motor Drives Laboratory Integrating Energy Storage withIntegrating Energy Storage with Renewable Energy SystemsRenewable Energy Systems Power Electronics and Motor Drives Introduction Wind Energy Profile Solar Energy Profile Energy Storage Options Role of Industrial Electronics

  7. Simplified Modelling and Control of a Synchronous Machine with VariableSpeed SixStep Drive

    E-Print Network [OSTI]

    Sanders, Seth

    systems. A scheme for control of electrical power flow is proposed for machines with variable­speed six (e.g. in implement- ing torque or power control), the mechanical dynamics of the model can to select a drive scheme before embarking on the system modelling and subsequent control design. Each drive

  8. Requirements for Grain Sorghum Irrigation on the High Plains.

    E-Print Network [OSTI]

    Thaxton, E. L. Jr.; Swanson, Norris P.

    1956-01-01T23:59:59.000Z

    and Recommendations Irrigation research was conducted with grain sorghum on the optimum use of underground water ' resources at the Amarillo and Lubbock Experiment Stations and on off-station plots during the past several years. Highest returns in pounds of grain... per inch of water are received when 'brain sorghum is sup I plied with adequate moisture from planting to the soft dough stage. I High-moisture levels are the most profitable; if the irrigation water supply becomes inadequate, the acreage to which...

  9. Production Practices for Irrigated Crops on the High Plains.

    E-Print Network [OSTI]

    Bonnen, C. A.; McArthur, W. C.; Magee, A. C.; Hughes, W.F.

    1953-01-01T23:59:59.000Z

    was snapped and the re- mainder was machine-stripped. th lint yields averaging nearly a bale per acre (Table and 24.0 hours, respectively, of off-farm labor were cotton snapping on sandy and on heavy soils. From hour of labor was used to cover... approximately half rl acreage with a stripper. hough machine operations on dry-land and on irrigated CULLIJI~ are similar for seedbed preparation, planting and culti- vating, nearly twice as much labor was needed for production of the irrigated crop...

  10. Trickle irrigation in the Trans-Pecos area of Texas

    E-Print Network [OSTI]

    Doak, Louis E

    1988-01-01T23:59:59.000Z

    LETTER OF TRANSNITTAL Louis Doak Agricultural Engineer P. O. Box 1041 College Station, TX 77841 !409) 823-2758 This paper represents part of the work th conducted at the Texas Agricultural Experiment Paces. This study in no way xs meant..., as in Israel. the future of row crop production will be in the use c f trickle irrigation technology. u's Doak TRICKLE IRRIGATION IN THE TRANS-PECOS AREA OF TEXAS A PROFESSIONAL PAPER LOUIS E. DOAK Submitted to the College of Agriculture of Texas A...

  11. Neighbour balance in a strip-block design for an experiment on irrigation

    E-Print Network [OSTI]

    Bailey, R. A.

    Neighbour balance in a strip-block design for an experiment on irrigation R. A. Bailey (Joint work There are 8 blocks. 2/15 #12;Irrigation experiment on citrus plants in a greenhouse There are 8 blocks. Each block is (4 rows ) Ã? (4 columns )/(4 pots ). 2/15 #12;Irrigation experiment on citrus plants

  12. Groundwater depletion and sustainability of irrigation in the US High Plains and Central Valley

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Groundwater depletion and sustainability of irrigation in the US High Plains and Central Valley impact crop produc- tion in the United States because 60% of irrigation relies on groundwater. Groundwater depletion in the irrigated High Plains and California Central Valley accounts for 50

  13. Empirical evidence for a recent slowdown in irrigation-induced cooling

    SciTech Connect (OSTI)

    Bonfils, C; Lobell, D

    2007-01-19T23:59:59.000Z

    Understanding the influence of past land use changes on climate is needed to improve regional projections of future climate change and inform debates about the tradeoffs associated with land use decisions. The effects of rapid expansion of irrigated area in the 20th century has remained unclear relative to other land use changes, such as urbanization, that affected a similar total land area. Using spatial and temporal variations in temperature and irrigation extent observed in California, we show that irrigation expansion has had a large cooling effect on summertime average daily daytime temperatures (-0.15 to -0.25 C.decade{sup -1}), which corresponds to a cooling estimated at -2.0 - -3.3 C since the introduction of irrigation practice. Irrigation has negligible effects on nighttime temperatures, leading to a net cooling effect of irrigation on climate (-0.06 to -0.19 C.decade{sup -1}). Stabilization of irrigated area has occurred in California since 1980 and is expected in the near future for most irrigated regions. The suppression of past human-induced greenhouse warming by increased irrigation is therefore likely to slow in the future, and a potential decrease in irrigation may even contribute to a more rapid warming. Changes in irrigation alone are not expected to influence broadscale temperatures, but they may introduce large uncertainties in climate projections for irrigated agricultural regions, which provide roughly 40% of global food production.

  14. Climate Mitigation Policy Implications for Global Irrigation Water Demand

    SciTech Connect (OSTI)

    Chaturvedi, Vaibhav; Hejazi, Mohamad I.; Edmonds, James A.; Clarke, Leon E.; Kyle, G. Page; Davies, Evan; Wise, Marshall A.

    2013-08-22T23:59:59.000Z

    Energy, water and land are scarce resources, critical to humans. Developments in each affect the availability and cost of the others, and consequently human prosperity. Measures to limit greenhouse gas concentrations will inevitably exact dramatic changes on energy and land systems and in turn alter the character, magnitude and geographic distribution of human claims on water resources. We employ the Global Change Assessment Model (GCAM), an integrated assessment model to explore the interactions of energy, land and water systems in the context of alternative policies to limit climate change to three alternative levels: 2.5 Wm-2 (445 ppm CO2-e), 3.5 Wm-2 (535 ppm CO2-e) and 4.5 Wm-2 (645 ppm CO2-e). We explore the effects of alternative land-use emissions mitigation policy options—one which values terrestrial carbon emissions equally with fossil fuel and industrial emissions, and an alternative which places no penalty on land-use change emissions. We find that increasing populations and economic growth could be anticipated to lead to increased demand for water for agricultural systems (+200%), even in the absence of climate change. In general policies to mitigate climate change will increase agricultural demands for water, regardless of whether or not terrestrial carbon is valued or not. Burgeoning demands for water are driven by the demand for bioenergy in response to emissions mitigation policies. We also find that the policy matters. Increases in the demand for water when terrestrial carbon emissions go un-prices are vastly larger than when terrestrial system carbon emissions are prices at the same rate as fossil fuel and industrial emissions. Our estimates for increased water demands when terrestrial carbon systems go un-priced are larger than earlier studies. We find that the deployment of improved irrigation delivery systems could mitigate some of the increase in water demands, but cannot reverse the increases in water demands when terrestrial carbon emissions go un-priced. Finally we estimates that the geospatial pattern of water demands could stress some parts of the world, e.g. China, India and other countries in south and east Asia, earlier and more intensely than in other parts of the world, e.g. North America.

  15. Abstract Efficiency issues of variable-capacitance micromotors are discussed in context of combined drive and motor

    E-Print Network [OSTI]

    Chapman, Patrick

    of combined drive and motor interaction. It is shown that variable-capacitance motors ideally have nearly, the drive system consisting of both the motor and electronics is not ideal when considering different motors, electric drives, efficiency I. INTRODUCTION An active area of research for commercial

  16. 51 Gerty Drive Champaign, Illinois 61820

    E-Print Network [OSTI]

    Bashir, Rashid

    51 Gerty Drive Champaign, Illinois 61820 217-333-3996 University Primary school sUmmer camP www of Illinois) with this form to: University Primary School, 51 Gerty Drive Champaign, IL 61820. Detailed

  17. Redundant Arrays of IDE Drives

    E-Print Network [OSTI]

    D. A. Sanders; L. M. Cremaldi; V. Eschenburg; C. N. Lawrence; C. Riley; D. J. Summers; D. L. Petravick

    2002-12-05T23:59:59.000Z

    The next generation of high-energy physics experiments is expected to gather prodigious amounts of data. New methods must be developed to handle this data and make analysis at universities possible. We examine some techniques that use recent developments in commodity hardware. We test redundant arrays of integrated drive electronics (IDE) disk drives for use in offline high-energy physics data analysis. IDE redundant array of inexpensive disks (RAID) prices now equal the cost per terabyte of million-dollar tape robots! The arrays can be scaled to sizes affordable to institutions without robots and used when fast random access at low cost is important. We also explore three methods of moving data between sites; internet transfers, hot pluggable IDE disks in FireWire cases, and writable digital video disks (DVD-R).

  18. Optimization of condensing gas drive

    E-Print Network [OSTI]

    Lofton, Larry Keith

    1977-01-01T23:59:59.000Z

    - cal, undersaturated reservoir with gas being injected into the crest and oil being produced from the base of the structure. Fractional oil re- covery at gas breakthrough proved to be less sensitive to changes in oil withdrawal rates as the gas... injection pressure was increased. The validity of the model was established by accurately simulating several low pressure gas drives conducted in the laboratory. Oil recoveries at gas breakthrough using the model compared closely with those recoveries...

  19. Marketing & Driving Demand Collaborative - Social Media Tools...

    Energy Savers [EERE]

    drivingdemandsocialmedia010611.pdf More Documents & Publications Marketing & Driving Demand: Social Media Tools & Strategies - January 16, 2011 Social Media for Natural...

  20. EFFICIENCY OF FAST WAVE CURRENT DRIVE FOR

    E-Print Network [OSTI]

    Karney, Charles

    EFFICIENCY OF FAST WAVE CURRENT DRIVE FOR A WEAKLY RELATIVISTIC PLASMA by S.C. CHIU, C.F.F. KARNEY: http://charles.karney.info/biblio/chiu94.html #12;Chiu e t al. THE EFFICIENCY OF FAST WAVE CURRENT DRIVE FOR A WEAKLY RELATIVISTIC PLASMA THE EFFICIENCY OF FAST WAVE CURRENT DRIVE FOR A WEAKLY

  1. A Roundtable Overview Driving the Top Line

    E-Print Network [OSTI]

    A Roundtable Overview Driving the Top Line #12;© 2012 Glassmeyer/McNamee Center for Digital of the Center for Digital Strategies. Driving the Top Line A Thought Leadership Roundtable on Digital, Switzerland for a discussion on how information technology can help companies drive top-line revenue. In many

  2. Evaluation of Smart Irrigation Controllers: Year 2010 Results

    E-Print Network [OSTI]

    Swanson, Charles; Fipps, Guy

    2011-12-19T23:59:59.000Z

    A smart controller testing facility was established by the Irrigation Technology Center at Texas A&M University in College Station in 2008 in order to evaluate their performance from an “enduser” point of view. The “end-user” is considered...

  3. Opportunities for Demand Response in California Agricultural Irrigation: A

    E-Print Network [OSTI]

    LBNL-6108E Opportunities for Demand Response in California Agricultural Irrigation: A Scoping Study was sponsored in part by the Demand Response Research Center which is funded by the California .................................. 2 Best Opportunities for Demand Response and Permanent Load Shifting Programs.............. 3

  4. Nitrogen Fertilization of Irrigated Cotton as Fertilizer Prices Climb

    E-Print Network [OSTI]

    Mukhtar, Saqib

    Nitrogen Fertilization of Irrigated Cotton as Fertilizer Prices Climb As gasoline prices at the pump continue to climb above $ 3.00/gallon, fertilizer prices, especially Nitrogen (N) are doing the same. As of spring 2008, the price of one ton of urea ammonium nitrate was $420, or $0.67 per lb N

  5. RESOLUTION NO. 2011-82 ADOPTING MODESTO IRRIGATION DISTRICT'S RENEWABLE

    E-Print Network [OSTI]

    RESOLUTION NO. 2011-82 ADOPTING MODESTO IRRIGATION DISTRICT'S RENEWABLE ENERGY RESOURCES Standard (RPS) in an effort to meet 20 percent ofits retail energy sales with renewable resources by 2017 for consideration by the Board of Directors, attached hereto as Attachment A, Renewable Energy Resources Enforcement

  6. Economically Optimum Irrigation Patternsfor Grain Sorghum Production: Texas High Plains 

    E-Print Network [OSTI]

    Zavaleta, L. R.; Lacewell, R. D.; Taylor, C. R.

    1979-01-01T23:59:59.000Z

    was relaxed to consider the case where the climatic environment was unknown. As in the deterministic case, the optimal amounts of irrigation water, by period. It was also observed, that with the open-loop feedback control, the results obtained for yields did...

  7. IRRIGATION OPTIMIZATION BY MODELING OF PLANT-SOIL INTERACTION

    E-Print Network [OSTI]

    Boyer, Edmond

    - action model is used to simulate the structural-functional plant growth conditioned by water status approach of dynamic programming is used. KEY WORDS Irrigation scheduling, plant-soil model, water stress]). In the coupling approach, we simulate the soil water balance by PILOTE to get the water stress index. Plant

  8. Sustainability of irrigated agriculture in the San Joaquin Valley, California

    E-Print Network [OSTI]

    Vrugt, Jasper A.

    productivity and sustainability. Currently, there is a good understanding of the fundamental soil hydrological scale and at the long term, so that the sustainability of alternative management strategies canSustainability of irrigated agriculture in the San Joaquin Valley, California Gerrit Schoups* , Jan

  9. Engaging Irrigation Organizations in Water Reallocation Ronald C. Griffin*

    E-Print Network [OSTI]

    Griffin, Ronald

    promise to rise in response to climate change and energy costs.3 Cost-effective production of the rightEngaging Irrigation Organizations in Water Reallocation Ronald C. Griffin* Texas A&M University Blvd., 211C Texas A&M University College Station, TX 77843-2124 979-777-4434 Abstract: Rising water

  10. Evaluation of irrigation management procedures for geothermal effluent

    SciTech Connect (OSTI)

    Brockway, C.E.; Robbins, C.W.; Robison, C.W.; Johnson, G.S.

    1984-06-01T23:59:59.000Z

    An investigation was conducted to determine the feasibility of geothermal power plant effluent disposal by surface irrigation and the resulting impact on the shallow aquifer. The study was conducted at the Raft River Experimental Geothermal Power Plant site near Malta, Idaho and at the Snake River Conservation Research Center with soils and effluent obtained from the geothermal power plant site.

  11. Integrated Assessment - A System to Drive Improvement

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    - 11:50 Staged Electron Laser Acceleration, Wayne Kimura, STI Optronics 11:50 - 12:05 Compton Scattering of Picosecond Electron and CO2 Beams, Tetsurou Kumita, Tokyo...

  12. Direct Drive Systems DDS | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE FacilityDimondale, Michigan: Energy Resources Jump to:1999) |

  13. Improving Motor and Drive System Performance

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet),EnergyImprovement of the Lost FoamCooling and ImprovingMotor and

  14. Physical model of a hybrid electric drive train

    E-Print Network [OSTI]

    Young, Brady W. (Brady William)

    2006-01-01T23:59:59.000Z

    A motor and flywheel system was designed to simulate the dynamics of the electric drive train and inertial mass of a hybrid electric vehicle. The model will serve as a test bed for students in 2.672 to study the energy ...

  15. Driving Resource Management With ApplicationLevel Quality of Service

    E-Print Network [OSTI]

    Katchabaw, Michael James

    Driving Resource Management With Application­Level Quality of Service Specifications Michael J­driven approach to resource management to support quality of service. We present our general strategy, the design resource management. Appeared in Decision Support Systems Journal, Volume 28, Elsevier Science Press, 2000

  16. Transport Research Arena Europe 2010, Brussels Towards Highly Automated Driving

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of HAVEit is to develop and investigate vehicle automation beyond ADAS systems, especially highly automated automated vehicles In 2010, two lines of research and development exist in the domain of ground vehicle automation: Either the automation is driving the vehicle fully automated without a human driver

  17. Progress in Direct-Drive Inertial Confinement Fusion

    SciTech Connect (OSTI)

    Meyerhofer,D.D.

    2004-12-17T23:59:59.000Z

    Recent progress in direct-drive inertial confinement fusion research at LLE using the 60-beam, 30-kJUV OMEGA laser system and cryogenic target capability to perform ignition-scaled implosions will be reported. In addition, a new high-energy (2.6-kJ) petawatt capability is currently under construction.

  18. Assistive listening devices drive neuroplasticity in children with dyslexia

    E-Print Network [OSTI]

    Assistive listening devices drive neuroplasticity in children with dyslexia Jane Hornickela Jolla, CA, and approved August 3, 2012 (received for review April 23, 2012) Children with dyslexia often on auditory neurophysiology and reading skills in children with dyslexia. FM system use reduced

  19. Office of Human Resources 1851 N. Research Drive

    E-Print Network [OSTI]

    Moore, Paul A.

    supervision of the Depository Supervisor, using the online systems of the cooperating libraries (Bowling GreenOffice of Human Resources 1851 N. Research Drive Bowling Green, Ohio 43402 (419) 372-8421 Fax: (419) 372-2920 E-mail: ohr@bgnet.bgsu.edu Position Vacancy Announcement LIBRARY ASSOCIATE 1 University

  20. Fluid cooled vehicle drive module

    DOE Patents [OSTI]

    Beihoff, Bruce C.; Radosevich, Lawrence D.; Meyer, Andreas A.; Gollhardt, Neil; Kannenberg, Daniel G.

    2005-11-15T23:59:59.000Z

    An electric vehicle drive includes a support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support, in conjunction with other packaging features may form a shield from both external EM/RFI and from interference generated by operation of the power electronic circuits. Features may be provided to permit and enhance connection of the circuitry to external circuitry, such as improved terminal configurations. Modular units may be assembled that may be coupled to electronic circuitry via plug-in arrangements or through interface with a backplane or similar mounting and interconnecting structures.

  1. Electric Drive Status and Challenges

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube|6721 Federal Register / Vol.6:Energy Eighth Annual NationalELECTRIC DRIVE

  2. Drive5 | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluating A Potential MicrohydroDistrict ofDongjin Semichem CoDow CorningDrive5 Jump

  3. arenicola marina irrigation: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    disequilibrium type of ionexchange process. Chemical weathering of rock forming minerals was the major driving force controlling confined aquifer water chemistry....

  4. Model Predictive Tracking Control for a Head-Positioning in a Hard-Disk-Drive

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Model Predictive Tracking Control for a Head-Positioning in a Hard-Disk-Drive M. Taktak-Meziou, A generated from Model Predictive Control (MPC). The first approach consists of a classical linear MPC without/Write (R/W) head of a Hard-Disk-Drive (HDD) servo-system, which is resolved with two control algorithms

  5. Vibrotactile Feedback in Steering Wheel Reduces Navigation Errors during GPS-Guided Car Driving

    E-Print Network [OSTI]

    Basdogan, Cagatay

    vibration motors are mounted onto the steering wheel of a driving simulator and driving experiments-based car navigation system to improve the navigation performance of a driver. In [5], vibration motors were auditory noise and distraction exist in the environment, the navigation errors (making a wrong turn

  6. Effect of driving frequency on excitation of turbulence in a kinetic plasma T. N. Parashar,1

    E-Print Network [OSTI]

    Shay, Michael

    -point motions. Using 2.5D hybrid simula- tions, we drive the system magnetically and examine the evo- lution of turbulence generation through magnetic forcing is studied using kinetic hybrid simulations with fully kinetic in exciting turbulence and heating the plasma when the time period of the driving is larger than the nonlinear

  7. Design and fabrication of pressure-compensating compliant tubes

    E-Print Network [OSTI]

    Martin, Ian (Ian P.)

    2014-01-01T23:59:59.000Z

    Different fabrication methods are evaluated for producing pressure-compensating tubes for use in low-pressure drip irrigation systems. Such devices would allow drip irrigation systems to operate at driving pressures much ...

  8. Installing a Subsurface Drip Irrigation System for Row Crops (Spanish) 

    E-Print Network [OSTI]

    Enciso, Juan

    2004-09-07T23:59:59.000Z

    cinta en el suelo con el lado de los emisores hacia arriba para evitar taponamien- tos condici?n que se presenta cuando el riego termina y las particulas se sedimentan. Los rollos traen indicadores que muestran la direc- ci?n de los emisores. 5. Poco...-45049-01149. La informaci?n presentada aqu? es solamente para prop?sitos educativos. Las referencias a productos o marcas comerciales se han hecho bajo el entendimiento que esto no implica que Texas AgriLife Extension Service tenga la intenci?n de discriminar o...

  9. Installing a Subsurface Drip Irrigation System for Row Crops (Spanish)

    E-Print Network [OSTI]

    Enciso, Juan

    2004-09-07T23:59:59.000Z

    cinta en el suelo con el lado de los emisores hacia arriba para evitar taponamien- tos condici?n que se presenta cuando el riego termina y las particulas se sedimentan. Los rollos traen indicadores que muestran la direc- ci?n de los emisores. 5. Poco...-45049-01149. La informaci?n presentada aqu? es solamente para prop?sitos educativos. Las referencias a productos o marcas comerciales se han hecho bajo el entendimiento que esto no implica que Texas AgriLife Extension Service tenga la intenci?n de discriminar o...

  10. Tritium Irrigation Facility & Automated Vadose Zone Monitoring System |

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItemResearch >Internship Program The NIF andPointsThrustTrinityTrinity:

  11. Crops reap benefits of Pantex irrigation system | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA Approved: 5-13-14Russianvolunteer | National011-03-2010EIS/%2A en Office

  12. Electric vehicle drive train with contactor protection

    DOE Patents [OSTI]

    Konrad, Charles E. (Roanoke, VA); Benson, Ralph A. (Roanoke, VA)

    1994-01-01T23:59:59.000Z

    A drive train for an electric vehicle includes a traction battery, a power drive circuit, a main contactor for connecting and disconnecting the traction battery and the power drive circuit, a voltage detector across contacts of the main contactor, and a controller for controlling the main contactor to prevent movement of its contacts to the closed position when the voltage across the contacts exceeds a predetermined threshold, to thereby protect the contacts of the contactor. The power drive circuit includes an electric traction motor and a DC-to-AC inverter with a capacitive input filter. The controller also inhibits the power drive circuit from driving the motor and thereby discharging the input capacitor if the contacts are inadvertently opened during motoring. A precharging contactor is controlled to charge the input filter capacitor prior to closing the main contactor to further protect the contacts of the main contactor.

  13. Electric vehicle drive train with contactor protection

    DOE Patents [OSTI]

    Konrad, C.E.; Benson, R.A.

    1994-11-29T23:59:59.000Z

    A drive train for an electric vehicle includes a traction battery, a power drive circuit, a main contactor for connecting and disconnecting the traction battery and the power drive circuit, a voltage detector across contacts of the main contactor, and a controller for controlling the main contactor to prevent movement of its contacts to the closed position when the voltage across the contacts exceeds a predetermined threshold, to thereby protect the contacts of the contactor. The power drive circuit includes an electric traction motor and a DC-to-AC inverter with a capacitive input filter. The controller also inhibits the power drive circuit from driving the motor and thereby discharging the input capacitor if the contacts are inadvertently opened during motoring. A precharging contactor is controlled to charge the input filter capacitor prior to closing the main contactor to further protect the contacts of the main contactor. 3 figures.

  14. Economic Methodology for South Texas Irrigation Projects - RGIDECON

    E-Print Network [OSTI]

    Ellis, John R.; Robinson, John R.C.; Sturdivant, Allen W.; Lacewell, Ronald D.; Rister, M. Edward

    Methodology October 31, 2002 page 10 of 28 free component for time preference, a risk premium, and an inflation premium3 (Rister et al. 1999). The relationship between these three components is considered multiplicative (Leatham; Hamilton), i.e., the overall...TR-203 October 2002 Economic Methodology for South Texas Irrigation Projects – RGIDECON© M. Edward Rister Ronald D. Lacewell John R. C. Robinson John R. Ellis Allen W. Sturdivant Department of Agricultural Economics Texas Agricultural Experiment...

  15. Evaluation of Smart Irrigation Controllers: Year 2011 Results

    E-Print Network [OSTI]

    Fipps, G.; Swanson, C.

    and Extension Specialist, Biological and 2 Agricultural Engineering, 2117 TAMU, College Station, TX 77843-2117; http://itc.tamu.edu SUMMARY A smart controller testing facility was established by the Irrigation Technology Center at Texas A&M University... this water balance. The parameters most commonly used include: ? ET (actual plant evapotranspiration) ? Rainfall ? Site properties (soil texture, root zone depth, water holding capacity) ? MAD (managed allowable depletion) The IA SWAT committee has...

  16. Lectures on current-drive theory

    SciTech Connect (OSTI)

    Fisch, N.J.

    1986-01-01T23:59:59.000Z

    Separate abstracts were prepared for 2 papers in this report. The papers present an introduction and an overview to the theory of current drive. (JDB)

  17. Pile driving and bioacoustic impacts on fish

    E-Print Network [OSTI]

    McKee, Deborah C.

    2005-01-01T23:59:59.000Z

    was the nexus to use steel piles as the preferred structuralbegan driving the steel piles, we realized that underwaterdeath to fish near the pile. Pressure waves are generated

  18. US DRIVE Highlights of Technical Accomplishments 2013

    Broader source: Energy.gov (indexed) [DOE]

    for longer-lasting and more cost-effective electric drive vehicle batteries. National Renewable Energy Laboratory Advanced energy storage devices, such as lithium- based...

  19. Fuel Economy: What Drives Consumer Choice?

    E-Print Network [OSTI]

    Turrentine, Tom; Kurani, Kenneth; Heffner, Rusty

    2007-01-01T23:59:59.000Z

    Car Buyers and Fuel Economy? ” Energy Policy, vol. 35, 2007.Fuel Economy: What Drives Consumer Choice? BY TOMyou think about fuel economy? ” Rather, we listened closely

  20. Fuel Economy: What Drives Consumer Choice?

    E-Print Network [OSTI]

    Turrentine, Tom; Kurani, Kenneth S; Heffner, Reid R.

    2008-01-01T23:59:59.000Z

    Car Buyers and Fuel Economy? ” Energy Policy, vol. 35, 2007.Fuel Economy: What Drives Consumer Choice? BY TOMyou think about fuel economy? ” Rather, we listened closely

  1. Electric-Drive Vehicle Basics (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2011-04-01T23:59:59.000Z

    Describes the basics of electric-drive vehicles, including hybrid electric vehicles, plug-in hybrid electric vehicles, all-electric vehicles, and the various charging options.

  2. Advanced Electric Drive Vehicles ? A Comprehensive Education...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Meeting arravt034tiferdowsi2012o.pdf More Documents & Publications Advanced Electric Drive Vehicles A Comprehensive Education, Training, and Outreach Program...

  3. Advanced Electric Drive Vehicles ? A Comprehensive Education...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Peer Evaluation arravt034tiferdowsi2011p.pdf More Documents & Publications Advanced Electric Drive Vehicles A Comprehensive Education, Training, and Outreach Program...

  4. Advanced Electric Drive Vehicles ? A Comprehensive Education...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    -- Washington D.C. tiarravt034ferdowsi2010o.pdf More Documents & Publications Advanced Electric Drive Vehicles A Comprehensive Education, Training, and Outreach Program...

  5. Dynamic coupling drives conformational evolution of branched...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Materials Characterization Dynamic coupling drives conformational evolution of branched polymers in solutions March 06, 2015 Inter-particle collision time (filled circles) and...

  6. Grand Challenge Portfolio: Driving Innovations in Industrial...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    9 Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 9 grandchallengesportfoliopg9.pdf More Documents & Publications Grand...

  7. Grand Challenge Portfolio: Driving Innovations in Industrial...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    6 Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 6 grandchallengesportfoliopg6.pdf More Documents & Publications Grand...

  8. Grand Challenge Portfolio: Driving Innovations in Industrial...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    8 Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 8 grandchallengesportfoliopg8.pdf More Documents & Publications Grand...

  9. Simulations of Plug-in Hybrid Vehicles Using Advanced Lithium Batteries and Ultracapacitors on Various Driving Cycles

    E-Print Network [OSTI]

    Burke, Andy; Zhao, Hengbing

    2010-01-01T23:59:59.000Z

    Energy Storage System Technology Facing Strong Hybrids,Energy Storage System Design and Its Motor Drive Integration for HybridSystems Gaining Traction, Proceedings of the 19 th International Seminar on Double-layer Capacitors and Hybrid Energy

  10. Expansion of Urban Area in Irrigation Districts of the Rio Grande River Basin, 1996 - 2006: A Map Series 

    E-Print Network [OSTI]

    Leigh, Eric; Barroso, M.; Fipps, G.

    2009-01-01T23:59:59.000Z

    ?County?Water?Control?&?Improvement?District?No.1? Maverick? Presidio?County?Water?Improvement?District?No.1? Presidio? Santa?Cruz?Irrigation?District?No.15? Santa?Cruz? Santa?Maria?Irrigation?District?Cameron?County?No.4? Santa?Maria? United?Irrigation?District?of?Hidalgo?County? United? Valley...?County?Water?Control?&?Improvement?District?No.1? 134,900? Presidio?County?Water?Improvement?District?No.1? 2,780? Santa?Cruz?Irrigation?District?No.15? 75,080? Santa?Maria?Irrigation?District?Cameron?County?No.4? 10,183? United?Irrigation?District?of?Hidalgo?County? 57,374? Valley...

  11. Expansion of Urban Area in Irrigation Districts of the Rio Grande River Basin, 1996 - 2006: A Map Series

    E-Print Network [OSTI]

    Leigh, Eric; Barroso, M.; Fipps, G.

    ?County?Water?Control?&?Improvement?District?No.1? Maverick? Presidio?County?Water?Improvement?District?No.1? Presidio? Santa?Cruz?Irrigation?District?No.15? Santa?Cruz? Santa?Maria?Irrigation?District?Cameron?County?No.4? Santa?Maria? United?Irrigation?District?of?Hidalgo?County? United? Valley...?County?Water?Control?&?Improvement?District?No.1? 134,900? Presidio?County?Water?Improvement?District?No.1? 2,780? Santa?Cruz?Irrigation?District?No.15? 75,080? Santa?Maria?Irrigation?District?Cameron?County?No.4? 10,183? United?Irrigation?District?of?Hidalgo?County? 57,374? Valley...

  12. A Receding Horizon Control Algorithm for Adaptive Management of Soil Moisture and Chemical Levels during Irrigation

    E-Print Network [OSTI]

    Park, Yeonjeong; Shamma, Jeff; Harmon, Thomas C

    2009-01-01T23:59:59.000Z

    Hence, management schemes arrived at in this work cannot bework, the RHC algorithm is applied to the problem of irrigation with reclaimed water. The management

  13. Novel Growth Substrates and Smart Irrigation Strategies to Reduce Water Consumption of

    E-Print Network [OSTI]

    Fay, Noah

    Novel Growth Substrates and Smart Irrigation Strategies to Reduce Water Consumption of Arizona and transducer) 2 Load cells Flow meter Solenoid valve #12;Experiment Measurements Datalogger, collected every

  14. Changes in Investment and Irrigation Water Costs, Texas High Plains, 1950-54.

    E-Print Network [OSTI]

    Magee, A. C.; Hughes, William F.

    1956-01-01T23:59:59.000Z

    * Changes in Investment and Irrigation Water Costs, * Texas High Plains, 1950 - 54 OKLAHOMA I I DEAF SMITH . RANDALL ARM- DONLEI COLLINGS- I , STRONG i i 'I The principal irrigated cotton production area of the High Plains is the shaded... no improvement in irrigation facilities during 1950-54. Additional capital investment on farms making improvements in irrigation-facilities averaged $7,600 in the sandy-land area, $5,664 in the heavy-land area and $6,642 for all farms surveyed. The average cost...

  15. BPA, electric co-op and irrigation district testing aquifer recharge

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    electric co-op and irrigation district testing aquifer recharge Dispatching recharge pumping could save money and relieve electricity oversupply Portland, Ore. - The Bonneville...

  16. Valuing Groundwater Services and Water Portfolio in Irrigated Agriculture with a Hedonic Pricing Model

    E-Print Network [OSTI]

    Mukherjee, Monobina

    2013-01-01T23:59:59.000Z

    2647-2668. Surface and Groundwater. 2012. U.S. EnvironmentalEstimating the Value of Groundwater in Irrigation, SelectedAgricultural adaptation to groundwater and climate. NBER

  17. Transfer system

    DOE Patents [OSTI]

    Kurosawa, Kanji (Tokyo, JP); Koga, Bunichiro (Miyagi, JP); Ito, Hideki (Miyagi, JP); Kiriyama, Shigeru (Miyagi, JP); Higuchi, Shizuo (Kanagawa, JP)

    2003-05-20T23:59:59.000Z

    A transport system includes a traveling rail (1) which constitutes a transport route and a transport body (3) which is capable of traveling on the traveling rail in the longitudinal direction of the traveling rail. Flexible drive tubes (5) are arranged on the traveling rail in the longitudinal direction of the traveling rail. The transport body includes a traveling wheel (4) which is capable of rolling on the traveling rail and drive wheels (2) which are capable of rolling on the drive tubes upon receiving the rotational drive power generated by pressure of a pressure medium supplied to the drive tubes while depressing the drive tubes. The traveling rail includes a plurality of transport sections and the transport body is capable of receiving a rotational drive force from the drive tubes at every transport sections. If necessary, a transport route changeover switch which changes over the transport route can be provided between the transport sections.

  18. DRIVE Analysis Tool Generates Custom Vehicle Drive Cycles Based on Real-World Data (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-04-01T23:59:59.000Z

    This fact sheet from the National Renewable Energy Laboratory describes the Drive-Cycle Rapid Investigation, Visualization, and Evaluation (DRIVE) analysis tool, which uses GPS and controller area network data to characterize vehicle operation and produce custom vehicle drive cycles, analyzing thousands of hours of data in a matter of minutes.

  19. Digital Architecture for Driving Large LED Arrays with Dynamic Bus Voltage Regulation and Phase Shifted PWM

    E-Print Network [OSTI]

    Emitting Diodes (HB-LEDs) with improved system efficiency and reduced EMI. Key advantages are achieved - This paper introduces a digital architecture suitable for driving a large number of High Brightness Light

  20. Conceptual Design - Polar Drive Ignition Campaign

    SciTech Connect (OSTI)

    Hansen, R

    2012-04-05T23:59:59.000Z

    The Laboratory for Laser Energetics (LLE) at the University of Rochester is proposing a collaborative effort with Lawrence Livermore National Laboratory (LLNL), Los Alamos National Laboratories (LANL), the Naval Research Laboratory (NRL), and General Atomics (GA) with the goal of developing a cryogenic polar drive (PD) ignition platform on the National Ignition Facility (NIF). The scope of this proposed project requires close discourse among theorists, experimentalists, and laser and system engineers. This document describes how this proposed project can be broken into a series of parallel independent activities that, if implemented, could deliver this goal in the 2017 timeframe. This Conceptual Design document is arranged into two sections: mission need and design requirements. Design requirements are divided into four subsystems: (1) A point design that details the necessary target specifications and laser pulse requirements; (2) The beam smoothing subsystem that describes the MultiFM 1D smoothing by spectral dispersion (SSD); (3) New optical elements that include continuous phase plates (CPP's) and distributed polarization rotators (DPR's); and (4) The cryogenic target handling and insertion subsystem, which includes the design, fabrication, testing, and deployment of a dedicated PD ignition target insertion cryostat (PD-ITIC). This document includes appendices covering: the primary criteria and functional requirements, the system design requirements, the work breakdown structure, the target point design, the experimental implementation plan, the theoretical unknowns and technical implementation risks, the estimated cost and schedule, the development plan for the DPR's, the development plan for MultiFM 1D SSD, and a list of acronym definitions. While work on the facility modifications required for PD ignition has been in progress for some time, some of the technical details required to define the specific modifications for a Conceptual Design Review (CDR) remain to be defined. In all cases, the facility modifications represent functional changes to existing systems or capabilities. The bulk of the scope yet to be identified is associated with the DPR's and MultiFM beam smoothing. Detailed development plans for these two subsystems are provided in Appendices H and I; additional discussion of subsystem requirements based on the physics of PD ignition is given in Section 3. Accordingly, LLE will work closely with LLNL to develop detailed conceptual designs for the PD-specific facility modifications, including assessments of the operational impact of implementation (e.g., changing optics for direct rather than indirect-drive illumination and swapping from a hohlraum-based ITIC to one that supports PD). Furthermore, the experimental implementation plan represents the current best understanding of the experimental campaigns required to achieve PD ignition. This plan will evolve based on the lessons learned from the National Ignition Campaign (NIC) and ongoing indirect-drive ignition experiments. The plan does not take the operational realities of the PD configuration into account; configuration planning for the proposed PD experiments is beyond the scope of this document.

  1. Risks of using AP locations discovered through war driving

    E-Print Network [OSTI]

    Kotz, David

    Risks of using AP locations discovered through war driving Minkyong Kim, Jeffrey J. Fielding the actual locations are often unavailable, they use estimated locations from war driving estimated through war driving. War driving is the process of collecting Wi-Fi beacons by driving or walking

  2. Direct Fusion Drive for a Human Mars Orbital Mission

    SciTech Connect (OSTI)

    Paluszek, Michael [Princeton Satellite Systems; Pajer, Gary [Princeton Satellite Systems; Razin, Yosef [Princeton Satellite Systems; Slonaker, James [Princeton Satellite Systems; Cohen, Samuel [PPPL; Feder, Russ [PPPL; Griffin, Kevin [Princeton University; Walsh, Matthew [Princeton University

    2014-08-01T23:59:59.000Z

    The Direct Fusion Drive (DFD) is a nuclear fusion engine that produces both thrust and electric power. It employs a field reversed configuration with an odd-parity rotating magnetic field heating system to heat the plasma to fusion temperatures. The engine uses deuterium and helium-3 as fuel and additional deuterium that is heated in the scrape-off layer for thrust augmentation. In this way variable exhaust velocity and thrust is obtained.

  3. Value of Irrigation Water with Alternative Input Prices, Product Prices and Yield Levels: Texas High Plains and Rio Grande Valley

    E-Print Network [OSTI]

    Lacewell, R. D.; Sprott, J. M.; Beattie, B. R.

    Agriculture is a major income generating sector of the Texas economy. Irrigated agriculture is an important part of Texas agriculture and an "adequate" water supply is important in maintaining a viable agriculture. Irrigation water is important both...

  4. Costs of Saving Water in South Texas with Irrigation District Infrastructure Rehabilitation - Using Capital Budgeting with RGIDECON©

    E-Print Network [OSTI]

    Rister, E.; Lacewell, R.; Sturdivant, A.

    As a part of the irrigation district plans, economists with Texas AgriLife Research and the Texas AgriLife Extension Service (through the Rio Grande Basin Initiative), developed and applied a spreadsheet model RGIDECON© (Rio Grande Irrigation...

  5. Cultural Experiments with Yellow Bermuda Onions under Irrigation.

    E-Print Network [OSTI]

    Hawthorn, L. R. (Leslie Rushton)

    1938-01-01T23:59:59.000Z

    year to year. Previous to the 1935-36 season there were three replications of each treatment. Beginning with that season the replications were in- creased to four. The frequency of irrigation experiments were planted in plats 109 feet long... on the numbers of plants of the various sizes. 1932-33: 1933-34: 1034-35: I I 1935-36: I 19313-37: Direct Field Sowing vs. Transplanting: In the first season of this test the seed was sown on the same day (September 19) in both the seedbed and the field...

  6. Modesto Irrigation District Smart Grid Project | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRose BendMiasole IncMinuteman WindMoana(Tempel, EtModesto Irrigation

  7. Chapter 18: Variable Frequency Drive Evaluation Protocol

    SciTech Connect (OSTI)

    Romberger, J.

    2014-11-01T23:59:59.000Z

    An adjustable-speed drive (ASD) includes all devices that vary the speed of a rotating load, including those that vary the motor speed and linkage devices that allow constant motor speed while varying the load speed. The Variable Frequency Drive Evaluation Protocol presented here addresses evaluation issues for variable-frequency drives (VFDs) installed on commercial and industrial motor-driven centrifugal fans and pumps for which torque varies with speed. Constant torque load applications, such as those for positive displacement pumps, are not covered by this protocol. Other ASD devices, such as magnetic drive, eddy current drives, variable belt sheave drives, or direct current motor variable voltage drives, are also not addressed. The VFD is by far the most common type of ASD hardware. With VFD speed control on a centrifugal fan or pump motor, energy use follows the affinity laws, which state that the motor electricity demand is a cubic relationship to speed under ideal conditions. Therefore, if the motor runs at 75% speed, the motor demand will ideally be reduced to 42% of full load power; however, with other losses it is about 49% of full load power.

  8. A high-fidelity harmonic drive model.

    SciTech Connect (OSTI)

    Preissner, C.; Royston, T. J.; Shu, D. (APS Engineering Support Division); ( MCS); (Univ. of Illinois)

    2012-01-01T23:59:59.000Z

    In this paper, a new model of the harmonic drive transmission is presented. The purpose of this work is to better understand the transmission hysteresis behavior while constructing a new type of comprehensive harmonic drive model. The four dominant aspects of harmonic drive behavior - nonlinear viscous friction, nonlinear stiffness, hysteresis, and kinematic error - are all included in the model. The harmonic drive is taken to be a black box, and a dynamometer is used to observe the input/output relations of the transmission. This phenomenological approach does not require any specific knowledge of the internal kinematics. In a novel application, the Maxwell resistive-capacitor hysteresis model is applied to the harmonic drive. In this model, sets of linear stiffness elements in series with Coulomb friction elements are arranged in parallel to capture the hysteresis behavior of the transmission. The causal hysteresis model is combined with nonlinear viscous friction and spectral kinematic error models to accurately represent the harmonic drive behavior. Empirical measurements are presented to quantify all four aspects of the transmission behavior. These measurements motivate the formulation of the complete model. Simulation results are then compared to additional measurements of the harmonic drive performance.

  9. On-Site Wastewater Treatment Systems: Spray Distribution

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    1999-09-06T23:59:59.000Z

    A spray distribution system is very similar to a lawn irrigation system. Spray heads are used to distribute treated wastewater to the surface of the yard. This publication explains the advantages and disadvantages of spray distribution systems...

  10. Combined water use of turf and woody ornamentals in an irrigated South Texas landscape

    E-Print Network [OSTI]

    Havlak, Roger Dale

    2004-01-01T23:59:59.000Z

    landscape and to determine the relationship between ET[a] and ET[p] to develop a landscape irrigation coefficient. An additional objective was to assess the effects of several landscape species on soil water dynamics in an irrigated South Texas landscape...

  11. Impacts of Irrigation on Citrus in the Lower Rio Grande Valley

    E-Print Network [OSTI]

    Enciso, Juan; Sauls, Julian W.; Wiedenfeld, Robert P.; Nelson, Shad D.

    2008-07-11T23:59:59.000Z

    Citrus is an important crop in the Lower Rio Grande Valley, but reduced water supplies in the area mean irrigation must be used. Citrus farmers can use different irrigation methods and practices to get the most from the available water supply....

  12. Linear Programming and Future Landuse Scenarios: An Irrigated Catchment Case Study 1 2

    E-Print Network [OSTI]

    Dragoti-Çela, Eranda

    by price trends and productivity and constrained by water resources, land capability and investment capital) and reform in the water supply sector will secure the resource base of irrigated agriculture at a cost which Gyles and Olive Montecillo Potential for change in the mix of irrigated enterprises was estimated

  13. Water Loss Test Results for the West Main Pipeline United Irrigation District of Hidalgo County 

    E-Print Network [OSTI]

    Leigh, E.; Fipps, G.

    2008-01-01T23:59:59.000Z

    TR-322 2008 Water Loss Test Results for the West Main Pipeline United Irrigation District of Hidalgo County Eric Leigh Texas AgriLife Extension Associate, Biological and Agricultural Engineering, College... Station Guy Fipps Texas AgriLife Extension Professor and Extension Agricultural Engineer, Biological and Agricultural Engineering, College Station March 20, 2007 Water Loss Test Results for the West Main Pipeline United Irrigation...

  14. Water Loss Test Results for the West Main Pipeline United Irrigation District of Hidalgo County

    E-Print Network [OSTI]

    Leigh, E.; Fipps, G.

    TR-322 2008 Water Loss Test Results for the West Main Pipeline United Irrigation District of Hidalgo County Eric Leigh Texas AgriLife Extension Associate, Biological and Agricultural Engineering, College... Station Guy Fipps Texas AgriLife Extension Professor and Extension Agricultural Engineer, Biological and Agricultural Engineering, College Station March 20, 2007 Water Loss Test Results for the West Main Pipeline United Irrigation...

  15. Fine-tuning Applied Nitrogen Rates for Sprinkler and Flood Irrigated Sugarbeet Production

    E-Print Network [OSTI]

    Lawrence, Rick L.

    typical irrigation practices, as well as increasing producers' input costs. An irrigation management study Eckhoff and Charles Flynn, Eastern Agricultural Research Center, Sidney, Montana Introduction Good content of 2.5%. Using a randomized complete block design, N was applied so that available N rates

  16. Project Title: Effects of Biosolid Land Application on Pathogens in Irrigation Return Flow

    E-Print Network [OSTI]

    Fay, Noah

    Project Title: Effects of Biosolid Land Application on Pathogens in Irrigation Return Flow and College of Agriculture and Life Sciences Advisor: Dr. Chris Choi Abstract: Biosolid land application in irrigation return flow from fields applied with biosolids. The results of this study showed that during

  17. Water Availability, Degree Days, and the Potential Impact of Climate Change on Irrigated Agriculture in California

    E-Print Network [OSTI]

    Fisher, Anthony C.

    California, climate change is likely to affect agriculture in two distinct ways. One pathway is the directWater Availability, Degree Days, and the Potential Impact of Climate Change on Irrigated influences on value such as soil quality, to examine the potential effects of climate change on irrigated

  18. Impact of Climate Change on Irrigation Water Availability, Crop Water Requirements and Soil Salinity in the SJV, CA

    E-Print Network [OSTI]

    Hopmans, Jan W; Maurer, Edwin P

    2008-01-01T23:59:59.000Z

    on Irrigation Water Availability, Crop Water Requirementsreduced surface water availability can be managed byrequirement and water availability (surface water and

  19. An Overview of Operational Characteristics of Selected Irrigation Districts in the Texas Lower Rio Grande Valley: Harlingen Irrigation District Cameron County No. 1

    E-Print Network [OSTI]

    Wolfe, Clint D.; Stubbs, Megan J.; Rister, M. Edward; Sturdivant, Allen W.; Lacewell, Ronald D.; Pennington, Ellen L.; Rogers, Callie S.

    Population expansion and water shortfalls have placed the Texas Lower Rio Grande Valley (Valley) center stage in water publicity. The unique characteristics and lack of public knowledge on how irrigation districts divert and convey water from...

  20. The art of smart irrigation: Researchers work to find the smartest irrigation controllers while educating auditors and homeowners to be smart too

    E-Print Network [OSTI]

    Lee, Leslie

    2011-01-01T23:59:59.000Z

    of the Texas ET (evapotranspiration) Network, which is an Irrigation Technology Center (ITC) program that provides online weather information, current and average ET data, and customizable irrigation recommendations. ITC is partially supported through... and Swanson predict that the selection of controllers designed for residential use, though currently fairly limited, will continue to grow, and the devices will eventually be bene#18;cial for homeowners. ?I would recommend that users hold o#28...

  1. Test Drive: Honda FCX Clarity | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Drive: Honda FCX Clarity Test Drive: Honda FCX Clarity May 14, 2010 - 10:52am Addthis A member of the Energy Empowers team takes the Honda FCX Clarity for a drive outside the U.S....

  2. Ag Education Student 1234 Education Drive

    E-Print Network [OSTI]

    Ag Education Student 1234 Education Drive Fort Collins, CO 80523 educationstudent@gmail.com~970-222-1234 Education Bachelors of Science in Agriculture Education (Teacher Licensure requirements met) Anticipated May

  3. January Blood Drive Announcement | Jefferson Lab

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Red Cross Blood Drive will take place Tuesday, January 27th from 10 a.m.-4 p.m. in CEBAF Center, Room F113. New and repeat donors are encouraged to attend. To schedule an...

  4. Image fusion for a nighttime driving display

    E-Print Network [OSTI]

    Herrington, William Frederick

    2005-01-01T23:59:59.000Z

    An investigation into image fusion for a nighttime driving display application was performed. Most of the image fusion techniques being investigated in this application were developed for other purposes. When comparing the ...

  5. Fuel Economy: What Drives Consumer Choice?

    E-Print Network [OSTI]

    Turrentine, Tom; Kurani, Kenneth; Heffner, Rusty

    2007-01-01T23:59:59.000Z

    S. Kurani, “Car Buyers and Fuel Economy? ” Energy Policy,Fuel Economy: What Drives Consumer Choice? BY TOMa car, do they think about fuel costs over time, are they

  6. Computer-Aided Engineering for Electric Drive Vehicle Batteries...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Computer-Aided Engineering for Electric Drive Vehicle Batteries (CAEBAT) Computer-Aided Engineering for Electric Drive Vehicle Batteries (CAEBAT) 2011 DOE Hydrogen and Fuel Cells...

  7. US DRIVE Electrochemical Energy Storage Technical Team Roadmap...

    Office of Environmental Management (EM)

    Electrochemical Energy Storage Technical Team Roadmap US DRIVE Electrochemical Energy Storage Technical Team Roadmap This U.S. DRIVE electrochemical energy storage roadmap...

  8. Vehicle Technologies Office Merit Review 2015: Electric Drive...

    Energy Savers [EERE]

    Vehicle Technologies Office Merit Review 2015: Electric Drive Inverter R&D Vehicle Technologies Office Merit Review 2015: Electric Drive Inverter R&D Presentation given by Oak...

  9. High-Voltage Solid Polymer Batteries for Electric Drive Vehicles...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    High-Voltage Solid Polymer Batteries for Electric Drive Vehicles High-Voltage Solid Polymer Batteries for Electric Drive Vehicles 2012 DOE Hydrogen and Fuel Cells Program and...

  10. Energy Upgrade California Drives Demand From Behind the Wheel...

    Energy Savers [EERE]

    Upgrade California Drives Demand From Behind the Wheel Energy Upgrade California Drives Demand From Behind the Wheel Photo of a trailer with the Energy Upgrade California logo and...

  11. Energy Department Invests to Drive Down Costs of Carbon Capture...

    Energy Savers [EERE]

    Invests to Drive Down Costs of Carbon Capture, Support Reductions in Greenhouse Gas Pollution Energy Department Invests to Drive Down Costs of Carbon Capture, Support Reductions...

  12. Medium- and Heavy-Duty Electric Drive Vehicle Simulation and...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Medium- and Heavy-Duty Electric Drive Vehicle Simulation and Analysis Medium- and Heavy-Duty Electric Drive Vehicle Simulation and Analysis 2011 DOE Hydrogen and Fuel Cells...

  13. Center for Electric Drive Transportation at the University of...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Electric Drive Transportation at the University of Michigan - Dearborn Center for Electric Drive Transportation at the University of Michigan - Dearborn 2012 DOE Hydrogen and Fuel...

  14. High-Temperature, Air-Cooled Traction Drive Inverter Packaging...

    Broader source: Energy.gov (indexed) [DOE]

    High-Temperature, Air-Cooled Traction Drive Inverter Packaging High-Temperature, Air-Cooled Traction Drive Inverter Packaging 2010 DOE Vehicle Technologies and Hydrogen Programs...

  15. EV Everywhere EV Everywhere Grand Challenge - Electric Drive...

    Energy Savers [EERE]

    EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop Agenda EV Everywhere EV Everywhere Grand Challenge - Electric Drive (Power...

  16. EV Everywhere Grand Challenge - Electric Drive (Power Electronics...

    Broader source: Energy.gov (indexed) [DOE]

    Drive Workshop EV Everywhere EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop Agenda EV Everywhere Grand Challenge - Battery...

  17. Use of Irrigation to Extend the Seeding Window for Final Reclamation at Yucca Mountain, Nevada

    SciTech Connect (OSTI)

    TRW Environmental Safety

    2000-08-01T23:59:59.000Z

    The U.S. Department of Energy has implemented a program to investigate the feasibility of various techniques for reclaiming lands disturbed during site characterization at Yucca Mountain. As part of this program, two studies were conducted in 1997 to assess the effects of combinations of seeding date (date that seeds are planted) and supplemental irrigation on densities of native plant species at Yucca Mountain. Study objectives were to (1) determine whether the traditional seeding window (October-December) could be extended through combinations of seeding date and irrigation date, (2) determine which combination of seeding date and irrigation was most successful, and (3) assess the effects of irrigation versus natural precipitation on seedling establishment. In the first study, a multi-species seed mix of 16 native species was sown into plots on four dates (12/96, 2/97, 3/97, and 4/97). Irrigation treatments were control (no irrigation) or addition of 80 mm of supplemental water applied over a one month period. Plant densities were sampled in August and again in October, 1997. In the second study, Larrea tridentata and Lycium andersonii, two species that are common at Yucca Mountain, but difficult to establish from seed, were sown together into plots in January and August, 1997. Half the plots were irrigated with approximately 250 mm of water between August 18 and September 11, while the remaining plots received no irrigation (control). Plant densities were sampled in October, 1997. The August census for the multi-species mix study showed irrigated plots that were sown in February, March and April had higher plant densities and more species than plots that were not irrigated. Irrigation had no effect on plant densities on plots that were seeded in December. Plots were used again in October following 18 mm of precipitation in September. Densities of three species, Ambrosia dumosa, Hymenoclea salsola, and L. tridentata, (warm-season species) were lower on irrigated plots sown in December, February, and March, and showed no response to irrigation on plots sown in April. Therefore, early spring irrigation did not facilitate establishment of warm-season species. These results suggest that these species are dependent upon precipitation while temperatures are warm in late summer or fall. However, control plots that were seeded in December had acceptable densities of these species. A more practical approach might be to avoid irrigation costs by seeding in December and waiting for fall precipitation. The remaining species (cool-season species) showed an opposite response to supplemental water with greater densities on irrigated plots sown in February, March, and April, and no response to irrigation on plots sown in December. While these results show that irrigation can extend the seeding window for cool-season species should it be necessary, it was also apparent that if seeds are sown by late December, irrigation is not necessary to achieve acceptable plant densities.

  18. The effect of frequency on the lifetime of a surface micromachined microengine driving a load

    SciTech Connect (OSTI)

    Tanner, D.M.; Miller, W.M.; Eaton, W.P.; Irwin, L.W.; Peterson, K.A.; Dugger, M.T.; Senft, D.C.; Smith, N.F.; Tangyunyong, P.; Miller, S.L.

    1998-03-01T23:59:59.000Z

    Experiments have been performed on surface micromachined microengines driving load gears to determine the effect of the rotation frequency on median cycles to failure. The authors did observe a frequency dependence and have developed a model based on fundamental wear mechanisms and forces exhibited in resonant mechanical systems. Stressing loaded microengines caused observable wear in the rotating joints and in a few instances led to fracture of the pin joint in the drive gear.

  19. Drive Cycle Analysis, Measurement of Emissions and Fuel Consumption of a PHEV School Bus: Preprint

    SciTech Connect (OSTI)

    Barnitt, R.; Gonder, J.

    2011-04-01T23:59:59.000Z

    The National Renewable Energy Laboratory (NREL) collected and analyzed real-world school bus drive cycle data and selected similar standard drive cycles for testing on a chassis dynamometer. NREL tested a first-generation plug-in hybrid electric vehicle (PHEV) school bus equipped with a 6.4L engine and an Enova PHEV drive system comprising a 25-kW/80 kW (continuous/peak) motor and a 370-volt lithium ion battery pack. A Bluebird 7.2L conventional school bus was also tested. Both vehicles were tested over three different drive cycles to capture a range of driving activity. PHEV fuel savings in charge-depleting (CD) mode ranged from slightly more than 30% to a little over 50%. However, the larger fuel savings lasted over a shorter driving distance, as the fully charged PHEV school bus would initially operate in CD mode for some distance, then in a transitional mode, and finally in a charge-sustaining (CS) mode for continued driving. The test results indicate that a PHEV school bus can achieve significant fuel savings during CD operation relative to a conventional bus. In CS mode, the tested bus showed small fuel savings and somewhat higher nitrogen oxide (NOx) emissions than the baseline comparison bus.

  20. Direct Drive Wave Energy Buoy

    SciTech Connect (OSTI)

    Rhinefrank, Kenneth E. [Columbia Power Technologies, Inc.; Lenee-Bluhm, Pukha [Columbia Power Technologies, Inc.; Prudell, Joseph H. [Columbia Power Technologies, Inc.; Schacher, Alphonse A. [Columbia Power Technologies, Inc.; Hammagren, Erik J. [Columbia Power Technologies, Inc.; Zhang, Zhe [Columbia Power Technologies, Inc.

    2013-07-29T23:59:59.000Z

    The most prudent path to a full-scale design, build and deployment of a wave energy conversion (WEC) system involves establishment of validated numerical models using physical experiments in a methodical scaling program. This Project provides essential additional rounds of wave tank testing at 1:33 scale and ocean/bay testing at a 1:7 scale, necessary to validate numerical modeling that is essential to a utility-scale WEC design and associated certification.

  1. Central interference in driving - Is there any stopping the psychological refractory period?

    E-Print Network [OSTI]

    Levy, J; Pashler, H; Boer, E

    2006-01-01T23:59:59.000Z

    while driving. Accident Analysis & Prevention, 31, 617–623.on driving performance. Accident Analysis & Prevention, 23,

  2. Plant Responses of Drip Irrigated Trees to Climate and Water Stress

    E-Print Network [OSTI]

    Punthakey, J. F.; McFarland, M. J.; Rodrigue, P. B.; Worthington, J. W.

    Past irrigation research has shown that peach (prunus persica) trees vary in their field response to water stress, and the degree of stress is a function of the plants' environment. Water deficits reduce plant growth and crop yields, therefore...

  3. A History of Irrigation in the Arkansas River Valley in Western Kansas, 1880-1910

    E-Print Network [OSTI]

    Sorensen, Conner

    1968-01-01T23:59:59.000Z

    of western Kansas, in particular the community around Garden City, Kansas. This history attempts to relate the development of irrigation in the Arkansas Valley through its formative years, 1880-1910. The term "Arkansas River Valley" as used here refers...

  4. The Effects of Great Plains Irrigation on the Surface Energy Balance, Regional Circulation, and Precipitation

    E-Print Network [OSTI]

    Huber, David B.; Brunsell, Nathaniel A.; Mechem, David B.

    2014-05-05T23:59:59.000Z

    Irrigation provides a needed source of water in regions of low precipitation. Adding water to a region that would otherwise see little natural precipitation alters the partitioning of surface energy fluxes, the evolution of the planetary boundary...

  5. Ozone (o3) efficacy on reduction of phytophthora capsici in recirculated horticultural irrigation water 

    E-Print Network [OSTI]

    McDonald, Garry Vernon

    2009-05-15T23:59:59.000Z

    Microorganisms that cause plant disease have been isolated in recirculated irrigation water and increase the risks of disease incidence in horticultural operations. Ozone is an effective oxidizer used to disinfect drinking water supplies and treat...

  6. Efficient Irrigation for Water conservation in the Rio Grande Basin: 2010-2011 Progress and Accomplishments 

    E-Print Network [OSTI]

    Kalisek, D.; Harris, B.L.; Runyan, C.; DeMouche, L.

    2011-06-21T23:59:59.000Z

    Since 2001, the Efficient Irrigation for Water Conservation in the Rio Grande Basin Federal Initiative— known as the Rio Grande Basin Initiative (RGBI)—has saved more than 5 million acre-feet of water. Researchers, Extension specialists, and county...

  7. COMPARISON OF PICKER AND STRIPPER HARVESTERS ON IRRIGATED COTTON ON THE HIGH PLAINS OF TEXAS

    E-Print Network [OSTI]

    Faulkner, William B.

    2010-01-16T23:59:59.000Z

    Plains is of more storm-proof varieties that have traditionally been harvested using stripper harvesters. However, improvements in irrigation technology and shifting markets for US cotton have increased interest in picker harvesters in the region. A...

  8. Decentralization and Economic Incentives to Manage Groundwater Withdrawals for Irrigation: from Theory to

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Decentralization and Economic Incentives to Manage Groundwater Withdrawals for Irrigation: from water management scenarios relying on four levers: economic incentives, transparency, negotiation, joint, in particular in the agricultural sector. This paper looks at possible institutional arrangements and incentive

  9. Response of Peanuts to Irrigation Management at Different Crop Growth Stages

    E-Print Network [OSTI]

    Howell, T. A.; McFarland, M. J.; Reddell, D. L.; Brown, K. W.; Newton, R. J.; Dahmen, P.

    for peanuts at different crop growth stages for the Spanish and the Florunner varieties. The yield of the two varieties was evaluated under seven different irrigation treatments including a "no stress" check treatment and a dryland treatment. Each treatment...

  10. The Economic Value of Irrigation Water in the Western United States: An Application to Ridge Regression

    E-Print Network [OSTI]

    Frank, M. D.; Beattie, B. R.

    the form of a multiplicative function with nine domain variables, i.e., irrigation water applied, value of land and buildings, hired labor expenditures, fuel and lubricant expenditures, fertilizer and lime expenditures, feed expenditures, value of machinery...

  11. Carbon Sequestration in Dryland and Irrigated Agroecosystems: Quantification at Different Scales for Improved Prediction

    SciTech Connect (OSTI)

    Verma, Shashi B; Cassman, Kenneth G; Arkebauer, Timothy J; Hubbard, Kenneth G; Knops, Johannes M; Suyker, Andrew E

    2012-09-14T23:59:59.000Z

    The overall objective of this research is to improve our basic understanding of the biophysical processes that govern C sequestration in major rainfed and irrigated agroecosystems in the north-central USA.

  12. Analysis of Desalination Processes for Treatment of Produced Water for Re-use as Irrigation Water 

    E-Print Network [OSTI]

    Bradt, Laura

    2012-04-20T23:59:59.000Z

    Produced water is a major side product of onshore oil and gas production. This water contains a mixture of organic and inorganic compounds and requires treatment for beneficial reuse. One option for the reuse of this water is irrigation. Treatment...

  13. Demonstration of the Rapid Assessment Tool: Analysis of Water Supply Conditions in the Harlingen Irrigation District 

    E-Print Network [OSTI]

    Leigh, E.; Fipps, G.

    2008-01-01T23:59:59.000Z

    network of irrigation districts. The Water Supply (Head) Conditions component of RAT is designed to determine the extent of the area affected from less than optimal water supply, to identify associated canal and pipeline segments, and to define the major...

  14. Modified Streamflows 1990 Level of Irrigation : Missouri, Colorado, Peace and Slave River Basin, 1928-1989.

    SciTech Connect (OSTI)

    A.G. Crook Company; United States. Bonneville Power Administration

    1993-07-01T23:59:59.000Z

    This report presents data for monthly mean streamflows adjusted for storage change, evaporation, and irrigation, for the years 1928-1990, for the Colorado River Basin, the Missouri River Basin, the Peace River Basin, and the Slave River Basin.

  15. Trickle irrigation of grain sorghum with water of different electrolyte concentrations

    E-Print Network [OSTI]

    Seifert, William John

    1973-01-01T23:59:59.000Z

    TRICKLE IRRIGATION OF GRAIN SORGHUM WITH WATER OF DIFFERENT ELECTROLYTE CONCENTRATIONS A Thesis by WILLIAM JOHN SEIFERT, JR. Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree... of MASTER OF SCIENCE May 1973 Major Subject: Agricultural Engineering TRICKLE IRRIGATION OF GRAIN SORGHUM WITH WATER OF DIFFERENT ELECTROLYTE CONCENTRATIONS A Thesis by WILLIAM JOHN SEIFERT& JR. Approved as to sty1e and content by: airman of Commi...

  16. The effect of sodium chloride in the irrigation water on the growth of selected ornamental plants 

    E-Print Network [OSTI]

    Apps, Gary Edward

    1976-01-01T23:59:59.000Z

    THE EFFECT OF SODIUM CHLORIDE IN THE IRRIGATION WATER ON THE GROWTH OF SELECTED ORNAMENTAL PLANTS A Thesis by GARY EDWARD APPS Submitted to the Graduate College of Texas A6M University in partial fulfillment of the requirement for the degree... of MASTER OF SCIENCE December 1976 Major Subject: Floriculture THE EFFECT OF SODIUM CHLORIDE IN THE IRRIGATION WATER ON THE GROWTH OF SELECTED ORNAMENTAL PLANTS A Thesis by GARY EDWARD APPS Approved as to style and content by: (Chairman of Committee...

  17. Efficient Irrigation for Water Conservation in the Rio Grande Basin: 2010/2011 Progress and Accomplishments

    E-Print Network [OSTI]

    Kalisek, D.; Harris, B. L.; Runyan, C.; DeMouche, L.

    gate selection and automation The United Irrigation District radial gate project demonstrates improved canal management through better gate operation, real-time data, and remote control of water flow. This year?s activities focused on the technical....2 percent. This hysteresis phenomenon accounted for up to a 0.1-foot difference, corresponding to about 4.4 cubic feet per second (cfs). This single gate demonstration project manages a key artery for United Irrigation District. The real-time decision...

  18. An economic analysis of sprinkler irrigation technology in the Texas Rice Belt

    E-Print Network [OSTI]

    Parker, Michael R

    1985-01-01T23:59:59.000Z

    AN ECONOMIC ANALYSIS OF SPRINKLER IRRIGATION TECHNOLOGY IN THE TEXAS RICE BELT A Thesis MICHAEL RAY PARKER Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirements for the degree of MASTER OP... SCIENCE December 1985 Major Subject: Agricultural Economics AN ECONOMIC ANALYSIS OF SPRINKLER IRRIGATION TECHNOLOGY IN THE TEXAS RICE BELT A Thesis MICHAEL R. PARKER Approved as to style and content by: M. Edward Rister (Co-Chairman) Ronald C...

  19. Regional climate effects of irrigation and urbanization in thewestern united states: a model intercomparison

    SciTech Connect (OSTI)

    Snyder, M.A.; Kueppers, L.M.; Sloan, L.C.; Cavan, D.C.; Jin, J.; Kanamaru, H.; Miller, N.L.; Tyree, M.; Du, H.; Weare, B.

    2006-05-01T23:59:59.000Z

    In the western United States, more than 30,500 square miles has been converted to irrigated agriculture and urban areas. This study compares the climate responses of four regional climate models (RCMs) to these past land-use changes. The RCMs used two contrasting land cover distributions: potential natural vegetation, and modern land cover that includes agriculture and urban areas. Three of the RCMs represented irrigation by supplementing soil moisture, producing large decreases in August mean (-2.5 F to -5.6 F) and maximum (-5.2 F to -10.1 F) 2-meter temperatures where natural vegetation was converted to irrigated agriculture. Conversion to irrigated agriculture also resulted in large increases in relative humidity (9 percent 36 percent absolute change). Only one of the RCMs produced increases in summer minimum temperature. Converting natural vegetation to urban land cover produced modest but discernable climate effects in all models, with the magnitude of the effects dependent upon the preexisting vegetation type. Overall, the RCM results indicate that land use change impacts are most pronounced during the summer months, when surface heating is strongest and differences in surface moisture between irrigated land and natural vegetation are largest. The irrigation effect on summer maximum temperatures is comparable in magnitude (but opposite in sign) to predicted future temperature change due to increasing greenhouse gas concentrations.

  20. Some Improvements in 81-Level Inverters for Traction Drive Juan Dixon, Cristin Elgueta and Luis Morn

    E-Print Network [OSTI]

    Catholic University of Chile (Universidad Católica de Chile)

    and their drawbacks have been carefully studied to allow its practical use in electric vehicles. Keywords: converterSome Improvements in 81-Level Inverters for Traction Drive Systems Juan Dixon, Cristián Elgueta and Luis Morán Abstract The application of high-level multilevel converters in traction systems is very

  1. Executive Summary Automation of driving functions is central to proposals for the design of an Auto-

    E-Print Network [OSTI]

    Varaiya, Pravin

    for an Automated Vehicle/Highway System (AVHS) is safe? In particular, can we prove that there can be no high is equivalent to solving an optimal control problem. Keywords: Automated Vehicle/Highway System 1 Introduction Automation of driving functions is central to proposals for the design of an Automated Vehicle

  2. SYNTHETIC LUBRICANTS, INC 1411 Callaghan Drive

    E-Print Network [OSTI]

    Rollins, Andrew M.

    1 SYNTHETIC LUBRICANTS, INC 1411 Callaghan Drive Greenville, MI 48838 MATERIAL SAFETY DATA SHEET irritating and potentially toxic fumes containing oxides of nitrogen if exposed to extreme heat in air: (Conditions to Avoid) Stable under normal use conditions and in final use concentration. Incompatibility

  3. SYNTHETIC LUBRICANTS, INC 1411 Callaghan Drive

    E-Print Network [OSTI]

    Rollins, Andrew M.

    1 SYNTHETIC LUBRICANTS, INC 1411 Callaghan Drive Greenville, MI 48838 MATERIAL SAFETY DATA SHEET. It will produce irritating and potentially toxic fumes containing oxides of nitrogen if exposed to extreme heat: (Conditions to Avoid) Stable under normal use conditions and in final use concentration. Incompatibility

  4. What's Driving Oil Prices? James L. Smith

    E-Print Network [OSTI]

    O'Donnell, Tom

    to demand and supply reactions. "The Coal Age didn't end because producers ran out of coal !!" OIL PRICE VS1 What's Driving Oil Prices? James L. Smith Cary M. Maguire Chair in Oil & Gas Management Critical Issues in Energy Federal Reserve Bank of Dallas November 2, 2006 The Price of OPEC Oil ($/bbl) $0 $20 $40

  5. Operating Instructions CASSEHE PUMP DRIVE UNIT

    E-Print Network [OSTI]

    Kleinfeld, David

    4 · Operating Instructions CASSEHE® PUMP DRIVE UNIT Catalog No. 72-510-000 72-510-220 PUMPING The squeezing action of rollers on tubing causes the peristaltic pumping action. The flow is proportionate to the speied of the rollers and the inside diameter of the tubing, both of which can be varied. Pumping

  6. Driving EHOs in NSTX Rob Goldston

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    Driving EHOs in NSTX Rob Goldston September 8, 2010 #12;Houston, We have a Problem · Lithium rises. · This is not good, but it is not because the lithium is not pumping deuterium. · In the absence in most respects to RWM interactions - but in rotating frame. · Being examined by J-K Park and A. Boozer

  7. What drives option prices? Frdric Abergel1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . The study reveals that while the modeling of stochastic volatility gives more robust models, the market does 2 Theoretical framework 4 3 Intraday joint dynamics of option and underlying prices 5 3.1 EppsWhat drives option prices? Frédéric Abergel1 and Riadh Zaatour2 Chair of Quantitative Finance Ecole

  8. Driving Supplement to Application for Student Employment

    E-Print Network [OSTI]

    Amin, S. Massoud

    Driving Supplement to Application for Student Employment For positions that require employees you for employment (MN STAT. S13.04 [Subd. 21]): Private Information Intended Use Legal Requirement. ______________________________________________________________________ ________________ Signature Date The University of Minnesota is an equal opportunity educator & employer. © 2001

  9. Risk Management 1851 N. Research Drive

    E-Print Network [OSTI]

    Moore, Paul A.

    -372-3135 Bowling Green State University Motor Vehicle Record Statement University policy requires that all driversRisk Management 1851 N. Research Drive Bowling Green, OH 43403 419-372-2127 Fax 419 acknowledge that the university endorses all applicable state motor vehicle regulations relating to driver

  10. Program assists steam drive design project

    SciTech Connect (OSTI)

    Mendez, A.A.

    1984-08-27T23:59:59.000Z

    A new program for the HP-41CV programmable calculator will compute all parameters required for a steam drive project design. The Marx and Langenheim model assumptions are used to solve a more advanced version of the Myhill and Stegemeier model. Also, the Mandl and Volek model assuptions are used to compute the size of the steam zone.

  11. Drive piston assembly for a valve actuator assembly

    DOE Patents [OSTI]

    Sun, Zongxuan (Troy, MI)

    2010-02-23T23:59:59.000Z

    A drive piston assembly is provided that is operable to selectively open a poppet valve. The drive piston assembly includes a cartridge defining a generally stepped bore. A drive piston is movable within the generally stepped bore and a boost sleeve is coaxially disposed with respect to the drive piston. A main fluid chamber is at least partially defined by the generally stepped bore, drive piston, and boost sleeve. First and second feedback chambers are at least partially defined by the drive piston and each are disposed at opposite ends of the drive piston. At least one of the drive piston and the boost sleeve is sufficiently configured to move within the generally stepped bore in response to fluid pressure within the main fluid chamber to selectively open the poppet valve. A valve actuator assembly and engine are also provided incorporating the disclosed drive piston assembly.

  12. Cell phone, blackberry, or other electronic device use while driving. Common sense tells us that handling and dialing cell phones while driving compromises safety,

    E-Print Network [OSTI]

    Powers, Robert

    Cell phone, blackberry, or other electronic device use while driving. Common sense tells us of electronic communication devices (navigational systems entry, cell phones including text messaging, email, or other electronic device for voice communications while the vehicle is in motion: o Use should be kept

  13. On the effect of the drive on self-organized criticality

    E-Print Network [OSTI]

    Winkler, Marco; Kinzel, Wolfgang

    2014-01-01T23:59:59.000Z

    The well known Sandpile model of self-organized criticality generates avalanches of all length and time scales, without tuning any parameters. In the original models the external drive is randomly selected. Here we investigate a drive which depends on the present state of the system, namely the effect of favoring sites with a certain height in the deposition process. If sites with height three are favored, the system stays in a critical state. Our numerical results indicate the same universality class as the original model with random depositition, although the stationary state is approached very differently. In constrast, when favoring sites with height two, only avalanches which cover the entire system occur. Furthermore, we investigate the distributions of sites with a certain height, as well as the transient processes of the different variants of the external drive.

  14. Impact of Input Voltage Sag and Unbalance on DC Link Inductor and Capacitor Stress in Adjustable Speed Drives

    E-Print Network [OSTI]

    Lipo, Thomas

    , outages, voltage surges and sags. Power quality problems induced in adjustable-speed drives (ASDs) have (120 Hz for 60 Hz system) that increases the electrical stresses on the dc bus choke inductor (if used

  15. Investigating Rainwater Harvesting as a Stormwater Best Management Practice and as a Function of Irrigation Water Use

    E-Print Network [OSTI]

    Shannak, Sa'D Abdel-Halim

    2012-02-14T23:59:59.000Z

    INVESTIGATING RAINWATER HARVESTING AS A STORMWATER BEST MANAGEMENT PRACTICE AND AS A FUNCTION OF IRRIGATION WATER USE A Thesis by SA?D ABDEL-HALIM SHANNAK Submitted to the Office of Graduate Studies of Texas A&M University... Management Practice and as a Function of Irrigation Water Use Copyright 2010 Sa?d Abdel-Halim Shannak INVESTIGATING RAINWATER HARVESTING AS A STORMWATER BEST MANAGEMENT PRACTICE AND AS A FUNCTION OF IRRIGATION WATER USE A Thesis by SA?D ABDEL...

  16. Modeling Cotton and Winter Wheat Growth and Yield Responses to Irrigation Management in the Texas High Plains and Rolling Plains

    E-Print Network [OSTI]

    Attia Mohamed, Ahmed

    2014-12-17T23:59:59.000Z

    and the dashed line is the ordinary least- squares linear regression line………………………………..…………… 96 5.3. Results of DSSAT-CSM-Wheat for grain yield as affected by one dryland (T1), four single irrigation (T2 to T5), two double irrigation (T6 and T7...), above average (c), and overall seasons (d)…………………………………………………… 101 5.4. Results of DSSAT-CSM-Wheat for biomass yield as affected by one dryland (T1), four single irrigation (T2 to T5), two double irrigation (T6 and T7), one triple...

  17. Workplace Plug-in Electric Vehicle Ride and Drive

    Broader source: Energy.gov [DOE]

    Workplace plug-in electric vehicle (PEV) Ride and Drive events are one of the most effective ways to drive PEV adoption. By providing staff the opportunity to experience PEVs first hand, they can...

  18. Secrets of the Motor That Drives Archaea Revealed

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Secrets of the Motor That Drives Archaea Revealed Secrets of the Motor That Drives Archaea Revealed Print Thursday, 14 February 2013 00:00 An international team led by John Tainer...

  19. Optimization of Driving Styles for Fuel Economy Improvement

    SciTech Connect (OSTI)

    Malikopoulos, Andreas [ORNL] [ORNL; Aguilar, Juan P. [Georgia Institute of Technology] [Georgia Institute of Technology

    2012-01-01T23:59:59.000Z

    Modern vehicles have sophisticated electronic control units, particularly to control engine operation with respect to a balance between fuel economy, emissions, and power. These control units are designed for specific driving conditions and testing. However, each individual driving style is different and rarely meets those driving conditions. In the research reported here we investigate those driving style factors that have a major impact on fuel economy. An optimization framework is proposed with the aim of optimizing driving styles with respect to these driving factors. A set of polynomial metamodels are constructed to reflect the responses produced by changes of the driving factors. Then we compare the optimized driving styles to the original ones and evaluate the efficiency and effectiveness of the optimization formulation.

  20. Indianapolis Offers a Lesson on Driving Demand | Department of...

    Energy Savers [EERE]

    Indianapolis Offers a Lesson on Driving Demand Indianapolis Offers a Lesson on Driving Demand The flier for EcoHouse, with the headline 'Save energy, save money, improve your home'...